A verification flaw was found in python-pysaml2, where it did not ensure that a signed SAML document was correctly signed. The default CryptoBackendXmlSec1 backend uses the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 must be configured explicitly to only use only x509 certificates for the verification process of the SAML document signature.
#### Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
{"id": "RH:CVE-2021-21239", "vendorId": null, "type": "redhatcve", "bulletinFamily": "info", "title": "CVE-2021-21239", "description": "A verification flaw was found in python-pysaml2, where it did not ensure that a signed SAML document was correctly signed. The default CryptoBackendXmlSec1 backend uses the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 must be configured explicitly to only use only x509 certificates for the verification process of the SAML document signature.\n#### Mitigation\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. \n\n", "published": "2021-09-24T11:10:51", "modified": "2023-03-07T23:02:31", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "availabilityImpact": "NONE", "baseScore": 4.3}, "severity": "MEDIUM", "exploitabilityScore": 8.6, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM"}, "exploitabilityScore": 2.8, "impactScore": 3.6}, "href": "https://access.redhat.com/security/cve/cve-2021-21239", "reporter": "redhat.com", "references": ["https://bugzilla.redhat.com/show_bug.cgi?id=2007587"], "cvelist": ["CVE-2021-21239"], "immutableFields": [], "lastseen": "2023-03-07T23:17:42", "viewCount": 19, "enchantments": {"dependencies": {"references": [{"type": "alpinelinux", "idList": ["ALPINE:CVE-2021-21239"]}, {"type": "cve", "idList": ["CVE-2021-21239"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2577-1:3F007"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-21239"]}, {"type": "freebsd", "idList": ["FB67567A-5D95-11EB-A955-08002728F74C"]}, {"type": "github", "idList": ["GHSA-5P3X-R448-PC62"]}, {"type": "nessus", "idList": ["DEBIAN_DLA-2577.NASL", "FREEBSD_PKG_FB67567A5D9511EBA95508002728F74C.NASL", "UBUNTU_USN-5066-1.NASL", "UBUNTU_USN-5066-2.NASL"]}, {"type": "osv", "idList": ["OSV:DLA-2577-1", "OSV:GHSA-5P3X-R448-PC62", "OSV:PYSEC-2021-49"]}, {"type": "ubuntu", "idList": ["USN-5066-1", "USN-5066-2"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-21239"]}, {"type": "veracode", "idList": ["VERACODE:29101"]}]}, "score": {"value": 1.1, "vector": "NONE"}, "backreferences": {"references": [{"type": "alpinelinux", "idList": ["ALPINE:CVE-2021-21239"]}, {"type": "cve", "idList": ["CVE-2021-21239"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2577-1:3F007"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2021-21239"]}, {"type": "freebsd", "idList": ["FB67567A-5D95-11EB-A955-08002728F74C"]}, {"type": "github", "idList": ["GHSA-5P3X-R448-PC62"]}, {"type": "nessus", "idList": ["DEBIAN_DLA-2577.NASL", "FREEBSD_PKG_FB67567A5D9511EBA95508002728F74C.NASL", "UBUNTU_USN-5066-1.NASL"]}, {"type": "ubuntu", "idList": ["USN-5066-1", "USN-5066-2"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2021-21239"]}]}, "exploitation": null, "epss": [{"cve": "CVE-2021-21239", "epss": "0.001480000", "percentile": "0.491500000", "modified": "2023-03-17"}], "vulnersScore": 1.1}, "_state": {"dependencies": 1678231334, "score": 1678231300, "epss": 1679112172}, "_internal": {"score_hash": "e9ddb9bb59658544bd7bc70d4418357e"}, "vendorCvss": {"score": "6.5", "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"}}
{"alpinelinux": [{"lastseen": "2022-09-26T20:05:49", "description": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-21T15:15:00", "type": "alpinelinux", "title": "CVE-2021-21239", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-03-10T21:00:00", "id": "ALPINE:CVE-2021-21239", "href": "https://security.alpinelinux.org/vuln/CVE-2021-21239", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "ubuntucve": [{"lastseen": "2022-08-04T13:22:48", "description": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2\nbefore 6.5.0 has an improper verification of cryptographic signature\nvulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1\nbackend and need to verify signed SAML documents are impacted. PySAML2 does\nnot ensure that a signed SAML document is correctly signed. The default\nCryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the\nsignature of signed SAML documents, but by default xmlsec1 accepts any type\nof key found within the given document. xmlsec1 needs to be configured\nexplicitly to only use only _x509 certificates_ for the verification\nprocess of the SAML document signature. This is fixed in PySAML2 6.5.0.\n\n#### Bugs\n\n * <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980772>\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-21T00:00:00", "type": "ubuntucve", "title": "CVE-2021-21239", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-01-21T00:00:00", "id": "UB:CVE-2021-21239", "href": "https://ubuntu.com/security/CVE-2021-21239", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "nessus": [{"lastseen": "2023-03-01T15:07:36", "description": "The remote Ubuntu 18.04 LTS / 20.04 LTS / 21.04 host has packages installed that are affected by a vulnerability as referenced in the USN-5066-1 advisory.\n\n - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only\n _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0. (CVE-2021-21239)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-09-08T00:00:00", "type": "nessus", "title": "Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : PySAML2 vulnerability (USN-5066-1)", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2023-01-17T00:00:00", "cpe": ["cpe:/o:canonical:ubuntu_linux:18.04:-:lts", "cpe:/o:canonical:ubuntu_linux:20.04:-:lts", "cpe:/o:canonical:ubuntu_linux:21.04", "p-cpe:/a:canonical:ubuntu_linux:python-pysaml2", "p-cpe:/a:canonical:ubuntu_linux:python3-pysaml2"], "id": "UBUNTU_USN-5066-1.NASL", "href": "https://www.tenable.com/plugins/nessus/153139", "sourceData": "#%NASL_MIN_LEVEL 70300\n##\n# (C) Tenable Network Security, Inc.\n#\n# The descriptive text and package checks in this plugin were\n# extracted from Ubuntu Security Notice USN-5066-1. The text\n# itself is copyright (C) Canonical, Inc. See\n# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered\n# trademark of Canonical, Inc.\n##\n\ninclude('deprecated_nasl_level.inc');\ninclude('compat.inc');\n\nif (description)\n{\n script_id(153139);\n script_version(\"1.3\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2023/01/17\");\n\n script_cve_id(\"CVE-2021-21239\");\n script_xref(name:\"USN\", value:\"5066-1\");\n\n script_name(english:\"Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : PySAML2 vulnerability (USN-5066-1)\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote Ubuntu host is missing a security update.\");\n script_set_attribute(attribute:\"description\", value:\n\"The remote Ubuntu 18.04 LTS / 20.04 LTS / 21.04 host has packages installed that are affected by a vulnerability as\nreferenced in the USN-5066-1 advisory.\n\n - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper\n verification of cryptographic signature vulnerability. Users of pysaml2 that use the default\n CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not\n ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using\n the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any\n type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only\n _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2\n 6.5.0. (CVE-2021-21239)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version\nnumber.\");\n script_set_attribute(attribute:\"see_also\", value:\"https://ubuntu.com/security/notices/USN-5066-1\");\n script_set_attribute(attribute:\"solution\", value:\n\"Update the affected python-pysaml2 and / or python3-pysaml2 packages.\");\n script_set_cvss_base_vector(\"CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N\");\n script_set_cvss_temporal_vector(\"CVSS2#E:U/RL:OF/RC:C\");\n script_set_cvss3_base_vector(\"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\");\n script_set_cvss3_temporal_vector(\"CVSS:3.0/E:U/RL:O/RC:C\");\n script_set_attribute(attribute:\"cvss_score_source\", value:\"CVE-2021-21239\");\n\n script_set_attribute(attribute:\"exploitability_ease\", value:\"No known exploits are available\");\n script_set_attribute(attribute:\"exploit_available\", value:\"false\");\n\n script_set_attribute(attribute:\"vuln_publication_date\", value:\"2021/01/21\");\n script_set_attribute(attribute:\"patch_publication_date\", value:\"2021/09/08\");\n script_set_attribute(attribute:\"plugin_publication_date\", value:\"2021/09/08\");\n\n script_set_attribute(attribute:\"plugin_type\", value:\"local\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:canonical:ubuntu_linux:18.04:-:lts\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:canonical:ubuntu_linux:20.04:-:lts\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:canonical:ubuntu_linux:21.04\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:canonical:ubuntu_linux:python-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:canonical:ubuntu_linux:python3-pysaml2\");\n script_end_attributes();\n\n script_category(ACT_GATHER_INFO);\n script_family(english:\"Ubuntu Local Security Checks\");\n\n script_copyright(english:\"Ubuntu Security Notice (C) 2021-2023 Canonical, Inc. / NASL script (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.\");\n\n script_dependencies(\"ssh_get_info.nasl\");\n script_require_keys(\"Host/cpu\", \"Host/Ubuntu\", \"Host/Ubuntu/release\", \"Host/Debian/dpkg-l\");\n\n exit(0);\n}\n\ninclude('audit.inc');\ninclude('ubuntu.inc');\ninclude('misc_func.inc');\n\nif ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);\nvar release = get_kb_item('Host/Ubuntu/release');\nif ( isnull(release) ) audit(AUDIT_OS_NOT, 'Ubuntu');\nvar release = chomp(release);\nif (! preg(pattern:\"^(18\\.04|20\\.04|21\\.04)$\", string:release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04 / 20.04 / 21.04', 'Ubuntu ' + release);\nif ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);\n\nvar cpu = get_kb_item('Host/cpu');\nif (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);\nif ('x86_64' >!< cpu && cpu !~ \"^i[3-6]86$\" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);\n\n\nvar pkgs = [\n {'osver': '18.04', 'pkgname': 'python-pysaml2', 'pkgver': '4.0.2-0ubuntu3.2'},\n {'osver': '18.04', 'pkgname': 'python3-pysaml2', 'pkgver': '4.0.2-0ubuntu3.2'},\n {'osver': '20.04', 'pkgname': 'python3-pysaml2', 'pkgver': '4.9.0-0ubuntu3.1'},\n {'osver': '21.04', 'pkgname': 'python3-pysaml2', 'pkgver': '6.1.0-0ubuntu1.21.04.1'}\n];\n\nvar flag = 0;\nforeach package_array ( pkgs ) {\n var osver = NULL;\n var pkgname = NULL;\n var pkgver = NULL;\n if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];\n if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];\n if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];\n if (osver && pkgname && pkgver) {\n if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_WARNING,\n extra : ubuntu_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = ubuntu_pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python-pysaml2 / python3-pysaml2');\n}\n", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-01T15:07:49", "description": "The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5066-2 advisory.\n\n - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only\n _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0. (CVE-2021-21239)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-09-14T00:00:00", "type": "nessus", "title": "Ubuntu 16.04 LTS : PySAML2 vulnerability (USN-5066-2)", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2023-01-17T00:00:00", "cpe": ["cpe:/o:canonical:ubuntu_linux:16.04:-:lts", "p-cpe:/a:canonical:ubuntu_linux:python-pysaml2", "p-cpe:/a:canonical:ubuntu_linux:python3-pysaml2"], "id": "UBUNTU_USN-5066-2.NASL", "href": "https://www.tenable.com/plugins/nessus/153361", "sourceData": "#%NASL_MIN_LEVEL 70300\n##\n# (C) Tenable Network Security, Inc.\n#\n# The descriptive text and package checks in this plugin were\n# extracted from Ubuntu Security Notice USN-5066-2. The text\n# itself is copyright (C) Canonical, Inc. See\n# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered\n# trademark of Canonical, Inc.\n##\n\ninclude('deprecated_nasl_level.inc');\ninclude('compat.inc');\n\nif (description)\n{\n script_id(153361);\n script_version(\"1.3\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2023/01/17\");\n\n script_cve_id(\"CVE-2021-21239\");\n script_xref(name:\"USN\", value:\"5066-2\");\n\n script_name(english:\"Ubuntu 16.04 LTS : PySAML2 vulnerability (USN-5066-2)\");\n\n script_set_attribute(attribute:\"synopsis\", value:\n\"The remote Ubuntu host is missing a security update.\");\n script_set_attribute(attribute:\"description\", value:\n\"The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the\nUSN-5066-2 advisory.\n\n - PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper\n verification of cryptographic signature vulnerability. Users of pysaml2 that use the default\n CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not\n ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using\n the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any\n type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only\n _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2\n 6.5.0. (CVE-2021-21239)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version\nnumber.\");\n script_set_attribute(attribute:\"see_also\", value:\"https://ubuntu.com/security/notices/USN-5066-2\");\n script_set_attribute(attribute:\"solution\", value:\n\"Update the affected python-pysaml2 and / or python3-pysaml2 packages.\");\n script_set_cvss_base_vector(\"CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N\");\n script_set_cvss_temporal_vector(\"CVSS2#E:U/RL:OF/RC:C\");\n script_set_cvss3_base_vector(\"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\");\n script_set_cvss3_temporal_vector(\"CVSS:3.0/E:U/RL:O/RC:C\");\n script_set_attribute(attribute:\"cvss_score_source\", value:\"CVE-2021-21239\");\n\n script_set_attribute(attribute:\"exploitability_ease\", value:\"No known exploits are available\");\n script_set_attribute(attribute:\"exploit_available\", value:\"false\");\n\n script_set_attribute(attribute:\"vuln_publication_date\", value:\"2021/01/21\");\n script_set_attribute(attribute:\"patch_publication_date\", value:\"2021/09/08\");\n script_set_attribute(attribute:\"plugin_publication_date\", value:\"2021/09/14\");\n\n script_set_attribute(attribute:\"plugin_type\", value:\"local\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:canonical:ubuntu_linux:16.04:-:lts\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:canonical:ubuntu_linux:python-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:canonical:ubuntu_linux:python3-pysaml2\");\n script_end_attributes();\n\n script_category(ACT_GATHER_INFO);\n script_family(english:\"Ubuntu Local Security Checks\");\n\n script_copyright(english:\"Ubuntu Security Notice (C) 2021-2023 Canonical, Inc. / NASL script (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.\");\n\n script_dependencies(\"ssh_get_info.nasl\");\n script_require_keys(\"Host/cpu\", \"Host/Ubuntu\", \"Host/Ubuntu/release\", \"Host/Debian/dpkg-l\");\n\n exit(0);\n}\n\ninclude('audit.inc');\ninclude('ubuntu.inc');\ninclude('misc_func.inc');\n\nif ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);\nvar release = get_kb_item('Host/Ubuntu/release');\nif ( isnull(release) ) audit(AUDIT_OS_NOT, 'Ubuntu');\nvar release = chomp(release);\nif (! preg(pattern:\"^(16\\.04)$\", string:release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04', 'Ubuntu ' + release);\nif ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);\n\nvar cpu = get_kb_item('Host/cpu');\nif (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);\nif ('x86_64' >!< cpu && cpu !~ \"^i[3-6]86$\" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);\n\n\nvar pkgs = [\n {'osver': '16.04', 'pkgname': 'python-pysaml2', 'pkgver': '3.0.0-3ubuntu1.16.04.4+esm1'},\n {'osver': '16.04', 'pkgname': 'python3-pysaml2', 'pkgver': '3.0.0-3ubuntu1.16.04.4+esm1'}\n];\n\nvar flag = 0;\nforeach package_array ( pkgs ) {\n var osver = NULL;\n var pkgname = NULL;\n var pkgver = NULL;\n if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];\n if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];\n if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];\n if (osver && pkgname && pkgver) {\n if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_WARNING,\n extra : ubuntu_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = ubuntu_pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python-pysaml2 / python3-pysaml2');\n}\n", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-01-24T14:43:08", "description": "Several issues have been found in python-pysaml2, a pure python implementation of SAML Version 2 Standard.\n\nCVE-2017-1000433\n\npysaml2 accept any password when run with python optimizations enabled. This allows attackers to log in as any user without knowing their password.\n\nCVE-2021-21239\n\npysaml2 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only\n_x509 certificates_ for the verification process of the SAML document signature.\n\nFor Debian 9 stretch, these problems have been fixed in version 3.0.0-5+deb9u2.\n\nWe recommend that you upgrade your python-pysaml2 packages.\n\nFor the detailed security status of python-pysaml2 please refer to its security tracker page at:\nhttps://security-tracker.debian.org/tracker/python-pysaml2\n\nNOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-01T00:00:00", "type": "nessus", "title": "Debian DLA-2577-1 : python-pysaml2 security update", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-1000433", "CVE-2021-21239"], "modified": "2021-03-03T00:00:00", "cpe": ["p-cpe:/a:debian:debian_linux:python-pysaml2", "p-cpe:/a:debian:debian_linux:python-pysaml2-doc", "p-cpe:/a:debian:debian_linux:python3-pysaml2", "cpe:/o:debian:debian_linux:9.0"], "id": "DEBIAN_DLA-2577.NASL", "href": "https://www.tenable.com/plugins/nessus/146893", "sourceData": "#\n# (C) Tenable Network Security, Inc.\n#\n# The descriptive text and package checks in this plugin were\n# extracted from Debian Security Advisory DLA-2577-1. The text\n# itself is copyright (C) Software in the Public Interest, Inc.\n#\n\ninclude(\"compat.inc\");\n\nif (description)\n{\n script_id(146893);\n script_version(\"1.2\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2021/03/03\");\n\n script_cve_id(\"CVE-2017-1000433\", \"CVE-2021-21239\");\n\n script_name(english:\"Debian DLA-2577-1 : python-pysaml2 security update\");\n script_summary(english:\"Checks dpkg output for the updated packages.\");\n\n script_set_attribute(\n attribute:\"synopsis\",\n value:\"The remote Debian host is missing a security update.\"\n );\n script_set_attribute(\n attribute:\"description\",\n value:\n\"Several issues have been found in python-pysaml2, a pure python\nimplementation of SAML Version 2 Standard.\n\nCVE-2017-1000433\n\npysaml2 accept any password when run with python optimizations\nenabled. This allows attackers to log in as any user without knowing\ntheir password.\n\nCVE-2021-21239\n\npysaml2 has an improper verification of cryptographic signature\nvulnerability. Users of pysaml2 that use the default\nCryptoBackendXmlSec1 backend and need to verify signed SAML documents\nare impacted. PySAML2 does not ensure that a signed SAML document is\ncorrectly signed. The default CryptoBackendXmlSec1 backend is using\nthe xmlsec1 binary to verify the signature of signed SAML documents,\nbut by default xmlsec1 accepts any type of key found within the given\ndocument. xmlsec1 needs to be configured explicitly to only use only\n_x509 certificates_ for the verification process of the SAML document\nsignature.\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.0.0-5+deb9u2.\n\nWe recommend that you upgrade your python-pysaml2 packages.\n\nFor the detailed security status of python-pysaml2 please refer to its\nsecurity tracker page at:\nhttps://security-tracker.debian.org/tracker/python-pysaml2\n\nNOTE: Tenable Network Security has extracted the preceding description\nblock directly from the DLA security advisory. Tenable has attempted\nto automatically clean and format it as much as possible without\nintroducing additional issues.\"\n );\n script_set_attribute(\n attribute:\"see_also\",\n value:\"https://lists.debian.org/debian-lts-announce/2021/02/msg00038.html\"\n );\n script_set_attribute(\n attribute:\"see_also\",\n value:\"https://packages.debian.org/source/stretch/python-pysaml2\"\n );\n # https://security-tracker.debian.org/tracker/source-package/python-pysaml2\n script_set_attribute(\n attribute:\"see_also\",\n value:\"http://www.nessus.org/u?757b3296\"\n );\n script_set_attribute(attribute:\"solution\", value:\"Upgrade the affected packages.\");\n script_set_cvss_base_vector(\"CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P\");\n script_set_cvss_temporal_vector(\"CVSS2#E:U/RL:OF/RC:C\");\n script_set_cvss3_base_vector(\"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H\");\n script_set_cvss3_temporal_vector(\"CVSS:3.0/E:U/RL:O/RC:C\");\n script_set_attribute(attribute:\"exploitability_ease\", value:\"No known exploits are available\");\n\n script_set_attribute(attribute:\"plugin_type\", value:\"local\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:debian:debian_linux:python-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:debian:debian_linux:python-pysaml2-doc\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:debian:debian_linux:python3-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:debian:debian_linux:9.0\");\n\n script_set_attribute(attribute:\"vuln_publication_date\", value:\"2018/01/02\");\n script_set_attribute(attribute:\"patch_publication_date\", value:\"2021/02/26\");\n script_set_attribute(attribute:\"plugin_publication_date\", value:\"2021/03/01\");\n script_set_attribute(attribute:\"generated_plugin\", value:\"current\");\n script_end_attributes();\n\n script_category(ACT_GATHER_INFO);\n script_copyright(english:\"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.\");\n script_family(english:\"Debian Local Security Checks\");\n\n script_dependencies(\"ssh_get_info.nasl\");\n script_require_keys(\"Host/local_checks_enabled\", \"Host/Debian/release\", \"Host/Debian/dpkg-l\");\n\n exit(0);\n}\n\n\ninclude(\"audit.inc\");\ninclude(\"debian_package.inc\");\n\n\nif (!get_kb_item(\"Host/local_checks_enabled\")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);\nif (!get_kb_item(\"Host/Debian/release\")) audit(AUDIT_OS_NOT, \"Debian\");\nif (!get_kb_item(\"Host/Debian/dpkg-l\")) audit(AUDIT_PACKAGE_LIST_MISSING);\n\n\nflag = 0;\nif (deb_check(release:\"9.0\", prefix:\"python-pysaml2\", reference:\"3.0.0-5+deb9u2\")) flag++;\nif (deb_check(release:\"9.0\", prefix:\"python-pysaml2-doc\", reference:\"3.0.0-5+deb9u2\")) flag++;\nif (deb_check(release:\"9.0\", prefix:\"python3-pysaml2\", reference:\"3.0.0-5+deb9u2\")) flag++;\n\nif (flag)\n{\n if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());\n else security_warning(0);\n exit(0);\n}\nelse audit(AUDIT_HOST_NOT, \"affected\");\n", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-03-01T14:56:16", "description": "pysaml2 Releases :\n\nFix processing of invalid SAML XML documents - CVE-2021-21238\n\nFix unspecified xmlsec1 key-type preference - CVE-2021-21239", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-27T00:00:00", "type": "nessus", "title": "FreeBSD : pysaml2 -- multiple vulnerabilities (fb67567a-5d95-11eb-a955-08002728f74c)", "bulletinFamily": "scanner", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21238", "CVE-2021-21239"], "modified": "2021-02-04T00:00:00", "cpe": ["p-cpe:/a:freebsd:freebsd:py36-pysaml2", "p-cpe:/a:freebsd:freebsd:py37-pysaml2", "p-cpe:/a:freebsd:freebsd:py38-pysaml2", "p-cpe:/a:freebsd:freebsd:py39-pysaml2", "cpe:/o:freebsd:freebsd"], "id": "FREEBSD_PKG_FB67567A5D9511EBA95508002728F74C.NASL", "href": "https://www.tenable.com/plugins/nessus/145469", "sourceData": "#\n# (C) Tenable Network Security, Inc.\n#\n# The descriptive text and package checks in this plugin were \n# extracted from the FreeBSD VuXML database :\n#\n# Copyright 2003-2021 Jacques Vidrine and contributors\n#\n# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,\n# HTML, PDF, PostScript, RTF and so forth) with or without modification,\n# are permitted provided that the following conditions are met:\n# 1. Redistributions of source code (VuXML) must retain the above\n# copyright notice, this list of conditions and the following\n# disclaimer as the first lines of this file unmodified.\n# 2. Redistributions in compiled form (transformed to other DTDs,\n# published online in any format, converted to PDF, PostScript,\n# RTF and other formats) must reproduce the above copyright\n# notice, this list of conditions and the following disclaimer\n# in the documentation and/or other materials provided with the\n# distribution.\n# \n# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS \"AS IS\"\n# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,\n# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\n# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS\n# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,\n# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT\n# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR\n# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,\n# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE\n# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,\n# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n#\n\ninclude(\"compat.inc\");\n\nif (description)\n{\n script_id(145469);\n script_version(\"1.3\");\n script_set_attribute(attribute:\"plugin_modification_date\", value:\"2021/02/04\");\n\n script_cve_id(\"CVE-2021-21238\", \"CVE-2021-21239\");\n\n script_name(english:\"FreeBSD : pysaml2 -- multiple vulnerabilities (fb67567a-5d95-11eb-a955-08002728f74c)\");\n script_summary(english:\"Checks for updated packages in pkg_info output\");\n\n script_set_attribute(\n attribute:\"synopsis\",\n value:\n\"The remote FreeBSD host is missing one or more security-related\nupdates.\"\n );\n script_set_attribute(\n attribute:\"description\",\n value:\n\"pysaml2 Releases :\n\nFix processing of invalid SAML XML documents - CVE-2021-21238\n\nFix unspecified xmlsec1 key-type preference - CVE-2021-21239\"\n );\n script_set_attribute(\n attribute:\"see_also\",\n value:\"https://github.com/IdentityPython/pysaml2/releases\"\n );\n # https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-f4g9-h89h-jgv9\n script_set_attribute(\n attribute:\"see_also\",\n value:\"http://www.nessus.org/u?84c6fd63\"\n );\n # https://github.com/IdentityPython/pysaml2/security/advisories/GHSA-5p3x-r448-pc62\n script_set_attribute(\n attribute:\"see_also\",\n value:\"http://www.nessus.org/u?3730c601\"\n );\n # https://vuxml.freebsd.org/freebsd/fb67567a-5d95-11eb-a955-08002728f74c.html\n script_set_attribute(\n attribute:\"see_also\",\n value:\"http://www.nessus.org/u?001fba75\"\n );\n script_set_attribute(attribute:\"solution\", value:\"Update the affected packages.\");\n script_set_cvss_base_vector(\"CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N\");\n script_set_cvss_temporal_vector(\"CVSS2#E:U/RL:OF/RC:C\");\n script_set_cvss3_base_vector(\"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N\");\n script_set_cvss3_temporal_vector(\"CVSS:3.0/E:U/RL:O/RC:C\");\n script_set_attribute(attribute:\"exploitability_ease\", value:\"No known exploits are available\");\n\n script_set_attribute(attribute:\"plugin_type\", value:\"local\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:freebsd:freebsd:py36-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:freebsd:freebsd:py37-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:freebsd:freebsd:py38-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"p-cpe:/a:freebsd:freebsd:py39-pysaml2\");\n script_set_attribute(attribute:\"cpe\", value:\"cpe:/o:freebsd:freebsd\");\n\n script_set_attribute(attribute:\"vuln_publication_date\", value:\"2021/01/20\");\n script_set_attribute(attribute:\"patch_publication_date\", value:\"2021/01/26\");\n script_set_attribute(attribute:\"plugin_publication_date\", value:\"2021/01/27\");\n script_set_attribute(attribute:\"generated_plugin\", value:\"current\");\n script_end_attributes();\n\n script_category(ACT_GATHER_INFO);\n script_copyright(english:\"This script is Copyright (C) 2021 and is owned by Tenable, Inc. or an Affiliate thereof.\");\n script_family(english:\"FreeBSD Local Security Checks\");\n\n script_dependencies(\"ssh_get_info.nasl\");\n script_require_keys(\"Host/local_checks_enabled\", \"Host/FreeBSD/release\", \"Host/FreeBSD/pkg_info\");\n\n exit(0);\n}\n\n\ninclude(\"audit.inc\");\ninclude(\"freebsd_package.inc\");\n\n\nif (!get_kb_item(\"Host/local_checks_enabled\")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);\nif (!get_kb_item(\"Host/FreeBSD/release\")) audit(AUDIT_OS_NOT, \"FreeBSD\");\nif (!get_kb_item(\"Host/FreeBSD/pkg_info\")) audit(AUDIT_PACKAGE_LIST_MISSING);\n\n\nflag = 0;\n\nif (pkg_test(save_report:TRUE, pkg:\"py36-pysaml2<6.5.0\")) flag++;\nif (pkg_test(save_report:TRUE, pkg:\"py37-pysaml2<6.5.0\")) flag++;\nif (pkg_test(save_report:TRUE, pkg:\"py38-pysaml2<6.5.0\")) flag++;\nif (pkg_test(save_report:TRUE, pkg:\"py39-pysaml2<6.5.0\")) flag++;\n\nif (flag)\n{\n if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());\n else security_warning(0);\n exit(0);\n}\nelse audit(AUDIT_HOST_NOT, \"affected\");\n", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "debiancve": [{"lastseen": "2022-07-04T06:01:52", "description": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-21T15:15:00", "type": "debiancve", "title": "CVE-2021-21239", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-01-21T15:15:00", "id": "DEBIANCVE:CVE-2021-21239", "href": "https://security-tracker.debian.org/tracker/CVE-2021-21239", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "veracode": [{"lastseen": "2022-07-26T16:47:04", "description": "pysaml2 improperly verifies cryptographic signatures. The default `CryptoBackendXmlSec1` using the `xmlsec1` binary incorrectly accepts any type of key found in the given document, instead of explicitly allowing only `x509` certificates for verification.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-22T05:05:02", "type": "veracode", "title": "Improper Verification Of Cryptographic Signature", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-03-10T23:55:50", "id": "VERACODE:29101", "href": "https://sca.analysiscenter.veracode.com/vulnerability-database/security/1/1/sid-29101/summary", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "osv": [{"lastseen": "2022-05-12T01:19:52", "description": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "baseScore": 6.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-01-21T15:15:00", "type": "osv", "title": "PYSEC-2021-49", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-03-10T21:00:00", "id": "OSV:PYSEC-2021-49", "href": "https://osv.dev/vulnerability/PYSEC-2021-49", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-03-28T05:40:52", "description": "### Impact\n\nAll users of pysaml2 that use the default `CryptoBackendXmlSec1` backend and need to verify signed SAML documents are impacted. `pysaml2 <= 6.4.1` does not ensure that a signed SAML document is correctly signed. The default `CryptoBackendXmlSec1` backend is using the `xmlsec1` binary to verify the signature of signed SAML documents, but by default, `xmlsec1` accepts any type of key found within the given document. `xmlsec1` needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature.\n\n### Patches\n\nUsers should upgrade to pysaml2 `v6.5.0`.\n\n### Workarounds\n\nNo workaround provided at this point.\n\n### References\n\nThis issue has been reported in the past at the xmlsec1 mailing list:\nhttps://www.aleksey.com/pipermail/xmlsec/2013/009717.html\n\n### Credits\n\n- Brian Wolff\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [pysaml2](https://github.com/IdentityPython/pysaml2)\n* Email us at [the incident-response address](mailto:incident-response@idpy.org)\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-21T14:12:18", "type": "osv", "title": "Improper Verification of Cryptographic Signature in PySAML2", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2023-03-28T05:40:50", "id": "OSV:GHSA-5P3X-R448-PC62", "href": "https://osv.dev/vulnerability/GHSA-5p3x-r448-pc62", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2022-07-21T08:15:42", "description": "\nSeveral issues have been found in python-pysaml2, a pure python\nimplementation of SAML Version 2 Standard.\n\n\n* [CVE-2017-1000433](https://security-tracker.debian.org/tracker/CVE-2017-1000433)\npysaml2 accept any password when run with python optimizations\n enabled. This allows attackers to log in as any user without\n knowing their password.\n* [CVE-2021-21239](https://security-tracker.debian.org/tracker/CVE-2021-21239)\npysaml2 has an improper verification of cryptographic signature\n vulnerability. Users of pysaml2 that use the default\n CryptoBackendXmlSec1 backend and need to verify signed SAML\n documents are impacted. PySAML2 does not ensure that a signed\n SAML document is correctly signed. The default\n CryptoBackendXmlSec1 backend is using the xmlsec1 binary to\n verify the signature of signed SAML documents, but by default\n xmlsec1 accepts any type of key found within the given document.\n xmlsec1 needs to be configured explicitly to only use only \\_x509\n certificates\\_ for the verification process of the SAML document signature.\n\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.0.0-5+deb9u2.\n\n\nWe recommend that you upgrade your python-pysaml2 packages.\n\n\nFor the detailed security status of python-pysaml2 please refer to\nits security tracker page at:\n<https://security-tracker.debian.org/tracker/python-pysaml2>\n\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: <https://wiki.debian.org/LTS>\n\n\n", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-26T00:00:00", "type": "osv", "title": "python-pysaml2 - security update", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239", "CVE-2017-1000433"], "modified": "2022-07-21T05:53:38", "id": "OSV:DLA-2577-1", "href": "https://osv.dev/vulnerability/DLA-2577-1", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "github": [{"lastseen": "2023-02-03T05:08:18", "description": "### Impact\n\nAll users of pysaml2 that use the default `CryptoBackendXmlSec1` backend and need to verify signed SAML documents are impacted. `pysaml2 <= 6.4.1` does not ensure that a signed SAML document is correctly signed. The default `CryptoBackendXmlSec1` backend is using the `xmlsec1` binary to verify the signature of signed SAML documents, but by default, `xmlsec1` accepts any type of key found within the given document. `xmlsec1` needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature.\n\n### Patches\n\nUsers should upgrade to pysaml2 `v6.5.0`.\n\n### Workarounds\n\nNo workaround provided at this point.\n\n### References\n\nThis issue has been reported in the past at the xmlsec1 mailing list:\nhttps://www.aleksey.com/pipermail/xmlsec/2013/009717.html\n\n### Credits\n\n- Brian Wolff\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [pysaml2](https://github.com/IdentityPython/pysaml2)\n* Email us at [the incident-response address](mailto:incident-response@idpy.org)\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-21T14:12:18", "type": "github", "title": "Improper Verification of Cryptographic Signature in PySAML2", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2023-02-03T05:04:34", "id": "GHSA-5P3X-R448-PC62", "href": "https://github.com/advisories/GHSA-5p3x-r448-pc62", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "ubuntu": [{"lastseen": "2023-01-26T15:19:39", "description": "## Releases\n\n * Ubuntu 21.04 \n * Ubuntu 20.04 LTS\n * Ubuntu 18.04 LTS\n\n## Packages\n\n * python-pysaml2 \\- Pure python implementation of SAML2\n\nBrian Wolff discovered that PySAML2 incorrectly validated cryptographic \nsignatures. A remote attacker could possibly use this issue to alter SAML \ndocuments.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-09-08T00:00:00", "type": "ubuntu", "title": "PySAML2 vulnerability", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-09-08T00:00:00", "id": "USN-5066-1", "href": "https://ubuntu.com/security/notices/USN-5066-1", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}, {"lastseen": "2023-01-26T15:19:37", "description": "## Releases\n\n * Ubuntu 16.04 ESM\n\n## Packages\n\n * python-pysaml2 \\- Pure python implementation of SAML2\n\nUSN-5066-1 fixed a vulnerability in PySAML2. This update provides \nthe corresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\nBrian Wolff discovered that PySAML2 incorrectly validated cryptographic \nsignatures. A remote attacker could possibly use this issue to alter SAML \ndocuments.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-09-08T00:00:00", "type": "ubuntu", "title": "PySAML2 vulnerability", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-09-08T00:00:00", "id": "USN-5066-2", "href": "https://ubuntu.com/security/notices/USN-5066-2", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "cve": [{"lastseen": "2023-02-09T14:06:18", "description": "PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-01-21T15:15:00", "type": "cve", "title": "CVE-2021-21239", "cwe": ["CWE-347"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21239"], "modified": "2021-03-10T21:00:00", "cpe": ["cpe:/o:debian:debian_linux:9.0"], "id": "CVE-2021-21239", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-21239", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}, "cpe23": ["cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"]}], "freebsd": [{"lastseen": "2022-01-19T15:51:30", "description": "\n\npysaml2 Releases:\n\nFix processing of invalid SAML XML documents - CVE-2021-21238\nFix unspecified xmlsec1 key-type preference - CVE-2021-21239\n\n\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "baseScore": 6.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-01-20T00:00:00", "type": "freebsd", "title": "pysaml2 -- multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-21238", "CVE-2021-21239"], "modified": "2021-01-20T00:00:00", "id": "FB67567A-5D95-11EB-A955-08002728F74C", "href": "https://vuxml.freebsd.org/freebsd/fb67567a-5d95-11eb-a955-08002728f74c.html", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "debian": [{"lastseen": "2022-01-05T02:29:43", "description": "- -------------------------------------------------------------------------\nDebian LTS Advisory DLA-2577-1 debian-lts@lists.debian.org\nhttps://www.debian.org/lts/security/ Abhijith PA\nFebruary 26, 2021 https://wiki.debian.org/LTS\n- -------------------------------------------------------------------------\n\nPackage : python-pysaml2\nVersion : 3.0.0-5+deb9u2\nCVE ID : CVE-2017-1000433 CVE-2021-21239\nDebian Bug : 886423 CVE-2021-21239\n\nSeveral issues have been found in python-pysaml2, a pure python \nimplementation of SAML Version 2 Standard.\n\nCVE-2017-1000433\n\n pysaml2 accept any password when run with python optimizations \n enabled. This allows attackers to log in as any user without \n knowing their password.\n\nCVE-2021-21239\n\n pysaml2 has an improper verification of cryptographic signature\n vulnerability. Users of pysaml2 that use the default\n CryptoBackendXmlSec1 backend and need to verify signed SAML\n documents are impacted. PySAML2 does not ensure that a signed\n SAML document is correctly signed. The default\n CryptoBackendXmlSec1 backend is using the xmlsec1 binary to\n verify the signature of signed SAML documents, but by default\n xmlsec1 accepts any type of key found within the given document.\n xmlsec1 needs to be configured explicitly to only use only _x509\n certificates_ for the verification process of the SAML document signature.\n\nFor Debian 9 stretch, these problems have been fixed in version\n3.0.0-5+deb9u2.\n\nWe recommend that you upgrade your python-pysaml2 packages.\n\nFor the detailed security status of python-pysaml2 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/python-pysaml2\n\nFurther information about Debian LTS security advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://wiki.debian.org/LTS", "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.1, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-26T05:05:51", "type": "debian", "title": "[SECURITY] [DLA 2577-1] python-pysaml2 security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-1000433", "CVE-2021-21239"], "modified": "2021-02-26T05:05:51", "id": "DEBIAN:DLA-2577-1:3F007", "href": "https://lists.debian.org/debian-lts-announce/2021/02/msg00038.html", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}]}
CVE-2021-21239
