In ARM mbed TLS before 2.7.0, there is a bounds-check bypass through an integer overflow in PSK identity parsing in the ssl_parse_client_psk_identity() function in library/ssl_srv.c.
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how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-03-21T14:27:39", "type": "debian", "title": "[SECURITY] [DSA 4147-1] polarssl security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": 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10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-18187", "CVE-2018-0487", "CVE-2018-0488"], "modified": "2018-03-21T14:27:39", "id": "DEBIAN:DSA-4147-1:DA684", "href": "https://lists.debian.org/debian-security-announce/2018/msg00073.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-10-21T21:34:12", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4138-1 security@debian.org\nhttps://www.debian.org/security/ Sebastien Delafond\nMarch 15, 2018 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : mbedtls\nCVE ID : CVE-2017-18187 CVE-2018-0487 CVE-2018-0488\nDebian Bug : 890287 890288\n\nSeveral vulnerabilities were discovered in mbed TLS, a lightweight\ncrypto and SSL/TLS library, that allowed a remote attacker to either\ncause a denial-of-service by application crash, or execute arbitrary\ncode.\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 2.4.2-1+deb9u2.\n\nWe recommend that you upgrade your mbedtls packages.\n\nFor the detailed security status of mbedtls please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/mbedtls\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-03-15T10:47:18", "type": "debian", "title": "[SECURITY] [DSA 4138-1] mbedtls security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-18187", "CVE-2018-0487", "CVE-2018-0488"], "modified": "2018-03-15T10:47:18", "id": "DEBIAN:DSA-4138-1:FC00D", "href": "https://lists.debian.org/debian-security-announce/2018/msg00064.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "gentoo": [{"lastseen": "2023-06-23T15:18:56", "description": "### Background\n\nmbed TLS (previously PolarSSL) is an \u201ceasy to understand, use, integrate and expand\u201d implementation of the TLS and SSL protocols and the respective cryptographic algorithms and support code required. \n\n### Description\n\nMultiple vulnerabilities have been discovered in mbed TLS. Please review the CVE identifiers referenced below for details. \n\n### Impact\n\nA remote attacker, through multiple vectors, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. \n\n### Workaround\n\nThere is no known workaround at this time.\n\n### Resolution\n\nAll mbed TLS users should upgrade to the latest version:\n \n \n # emerge --sync\n # emerge --ask --oneshot --verbose \">=net-libs/mbedtls-2.7.2\"", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2018-04-22T00:00:00", "type": "gentoo", "title": "mbed TLS: Multiple vulnerabilites", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-18187", "CVE-2018-0487", "CVE-2018-0488"], "modified": "2018-04-22T00:00:00", "id": "GLSA-201804-19", "href": "https://security.gentoo.org/glsa/201804-19", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "fedora": [{"lastseen": "2020-12-21T08:17:54", "description": "Mbed TLS is a light-weight open source cryptographic and SSL/TLS library written in C. Mbed TLS makes it easy for developers to include cryptographic and SSL/TLS capabilities in their (embedded) applications with as little hassle as possible. FOSS License Exception: https://tls.mbed.org/foss-license-exception ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-02-28T17:10:35", "type": "fedora", "title": "[SECURITY] Fedora 27 Update: mbedtls-2.7.0-1.fc27", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-18187", "CVE-2018-0487", "CVE-2018-0488"], "modified": "2018-02-28T17:10:35", "id": "FEDORA:DC84460DC477", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/TODZI6LI3BIMQOPKN35KXJED3J52R2AM/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2020-12-21T08:17:54", "description": "Mbed TLS is a light-weight open source cryptographic and SSL/TLS library written in C. Mbed TLS makes it easy for developers to include cryptographic and SSL/TLS capabilities in their (embedded) applications with as little hassle as possible. FOSS License Exception: https://tls.mbed.org/foss-license-exception ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-02-28T16:44:37", "type": "fedora", "title": "[SECURITY] Fedora 26 Update: mbedtls-2.7.0-1.fc26", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-18187", "CVE-2018-0487", "CVE-2018-0488"], "modified": "2018-02-28T16:44:37", "id": "FEDORA:3AB6B60BC457", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/AKMN7UZLKBSOCUV4EWAIPCXGZQQUJ4BX/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "osv": [{"lastseen": "2022-07-21T08:24:09", "description": "\nSeveral vulnerabilities were discovered in mbed TLS, a lightweight\ncrypto and SSL/TLS library, that allowed a remote attacker to either\ncause a denial-of-service by application crash, or execute arbitrary\ncode.\n\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 2.4.2-1+deb9u2.\n\n\nWe recommend that you upgrade your mbedtls packages.\n\n\nFor the detailed security status of mbedtls please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/mbedtls](https://security-tracker.debian.org/tracker/mbedtls)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 5.9}, "published": "2018-03-15T00:00:00", "type": "osv", "title": "mbedtls - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": true, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2018-0487", "CVE-2017-18187", "CVE-2018-0488"], "modified": "2022-07-21T05:49:47", "id": "OSV:DSA-4138-1", "href": "https://osv.dev/vulnerability/DSA-4138-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "ubuntu": [{"lastseen": "2023-06-23T15:39:49", "description": "## Releases\n\n * Ubuntu 16.04 ESM\n\n## Packages\n\n * mbedtls \\- lightweight crypto and SSL/TLS library - crypto library\n\nIt was discovered that mbedtls has a bounds-check bypass through an integer \noverflow that can be used by an attacked to execute arbitrary code or cause a \ndenial of service. \n(CVE-2017-18187)\n\nIt was discovered that mbedtls has a vulnerability where an attacker could \nexecute arbitrary code or cause a denial of service (buffer overflow) \nvia a crafted certificate chain that is mishandled during RSASSA-PSS \nsignature verification within a TLS or DTLS session. \n(CVE-2018-0487)\n\nIt was discovered that mbedtls has a vulnerability where an attacker could \nexecute arbitrary code or cause a denial of service (heap corruption) via a \ncrafted application packet within a TLS or DTLS session. \n(CVE-2018-0488)\n\nIt was discovered that mbedtls has a vulnerability that allows remote \nattackers to achieve partial plaintext recovery (for a CBC based ciphersuite) \nvia a timing-based side-channel attack. \n(CVE-2018-0497)\n\nIt was discovered that mbedtls has a vulnerability that allows local users to \nachieve partial plaintext recovery (for a CBC based ciphersuite) via a \ncache-based side-channel attack. \n(CVE-2018-0498)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2020-02-05T00:00:00", "type": "ubuntu", "title": "ARM mbed TLS vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": true, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-18187", "CVE-2018-0487", "CVE-2018-0488", "CVE-2018-0497", "CVE-2018-0498"], "modified": "2020-02-05T00:00:00", "id": "USN-4267-1", "href": "https://ubuntu.com/security/notices/USN-4267-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}]}
CVE-2017-18187
