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([CVE-2019-3877 __](<https://access.redhat.com/security/cve/CVE-2019-3877>))\n\n \n**Affected Packages:** \n\n\nmod24_auth_mellon\n\n \n**Issue Correction:** \nRun _yum update mod24_auth_mellon_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n i686: \n mod24_auth_mellon-diagnostics-0.14.0-2.8.amzn1.i686 \n mod24_auth_mellon-debuginfo-0.14.0-2.8.amzn1.i686 \n mod24_auth_mellon-0.14.0-2.8.amzn1.i686 \n \n src: \n mod24_auth_mellon-0.14.0-2.8.amzn1.src \n \n x86_64: \n mod24_auth_mellon-diagnostics-0.14.0-2.8.amzn1.x86_64 \n mod24_auth_mellon-debuginfo-0.14.0-2.8.amzn1.x86_64 \n mod24_auth_mellon-0.14.0-2.8.amzn1.x86_64 \n \n \n", "edition": 4, "modified": "2019-05-02T17:18:00", "published": "2019-05-02T17:18:00", "id": "ALAS-2019-1200", "href": "https://alas.aws.amazon.com/ALAS-2019-1200.html", "title": "Important: mod24_auth_mellon", "type": "amazon", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2020-11-10T12:37:33", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2019-3877"], "description": "**Issue Overview:**\n\nA vulnerability was found in a previous version of mod_auth_mellon. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apr_uri_parse function.([CVE-2019-3877 __](<https://access.redhat.com/security/cve/CVE-2019-3877>))\n\nA vulnerability was found in mod_auth_mellon. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.([CVE-2019-3878 __](<https://access.redhat.com/security/cve/CVE-2019-3878>))\n\n \n**Affected Packages:** \n\n\nmod_auth_mellon\n\n \n**Issue Correction:** \nRun _yum update mod_auth_mellon_ to update your system. \n\n\n \n\n\n**New Packages:**\n \n \n aarch64: \n mod_auth_mellon-0.14.0-2.amzn2.4.aarch64 \n mod_auth_mellon-debuginfo-0.14.0-2.amzn2.4.aarch64 \n mod_auth_mellon-diagnostics-0.14.0-2.amzn2.4.aarch64 \n \n i686: \n mod_auth_mellon-0.14.0-2.amzn2.4.i686 \n mod_auth_mellon-debuginfo-0.14.0-2.amzn2.4.i686 \n mod_auth_mellon-diagnostics-0.14.0-2.amzn2.4.i686 \n \n src: \n mod_auth_mellon-0.14.0-2.amzn2.4.src \n \n x86_64: \n mod_auth_mellon-0.14.0-2.amzn2.4.x86_64 \n mod_auth_mellon-debuginfo-0.14.0-2.amzn2.4.x86_64 \n mod_auth_mellon-diagnostics-0.14.0-2.amzn2.4.x86_64 \n \n \n", "edition": 1, "modified": "2019-05-16T21:50:00", "published": "2019-05-16T21:50:00", "id": "ALAS2-2019-1200", "href": "https://alas.aws.amazon.com/AL2/ALAS-2019-1200.html", "title": "Important: mod_auth_mellon", "type": "amazon", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "oraclelinux": [{"lastseen": "2019-05-29T18:37:04", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2019-3877"], "description": "[0.14.0-2.4]\n- Actually apply the patch in the previous build\n- Resolves: rhbz#1697488 - CVE-2019-3877 mod_auth_mellon: open redirect\n in logout url when using URLs with backslashes\n[0.14.0-2.3]\n- Resolves: rhbz#1697488 - CVE-2019-3877 mod_auth_mellon: open redirect\n in logout url when using URLs with backslashes\n [rhel-7] [rhel-7.6.z]\n[0.14.0-2.2]\n- Resolves: rhbz#1697487 - mod_auth_mellon Cert files name wrong when\n hostname contains a number\n[0.14.0-2.1]\n- Resolves: rhbz#1692455 - CVE-2019-3878 mod_auth_mellon: authentication\n bypass in ECP flow [rhel-7.6.z]", "edition": 3, "modified": "2019-04-16T00:00:00", "published": "2019-04-16T00:00:00", "id": "ELSA-2019-0766", "href": "http://linux.oracle.com/errata/ELSA-2019-0766.html", "title": "mod_auth_mellon security and bug fix update", "type": "oraclelinux", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2019-11-21T23:27:58", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2019-3877"], "description": "[0.14.0-9]\n- Just bump the release number\n- Related: rhbz#1718238 - mod_auth_mellon-diagnostics RPM not in product\n listings\n[0.14.0-8]\n- Resolves: rhbz#1691894 - [RFE] Config option to change mod_auth_mellon prefix\n[0.14.0-7]\n- Apply the patch from the previous commit\n- Resolves: rhbz#1692471 - CVE-2019-3877 appstream/mod_auth_mellon: open\n redirect in logout url when using URLs with\n backslashes [rhel-8]\n[0.14.0-6]\n- Resolves: rhbz#1692471 - CVE-2019-3877 appstream/mod_auth_mellon: open\n redirect in logout url when using URLs with\n backslashes [rhel-8]\n[0.14.0-5]\n- Resolves: rhbz#1692457 - CVE-2019-3878 mod_auth_mellon: authentication\n bypass in ECP flow [rhel-8.1.0]\n[0.14.0-4]\n- Resolves: rhbz#1702695 - fresh install of mod_auth_mellon shows rpm\n verification warnings", "edition": 1, "modified": "2019-11-14T00:00:00", "published": "2019-11-14T00:00:00", "id": "ELSA-2019-3421", "href": "http://linux.oracle.com/errata/ELSA-2019-3421.html", "title": "mod_auth_mellon security, bug fix, and enhancement update", "type": "oraclelinux", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "fedora": [{"lastseen": "2020-12-21T08:17:55", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3877", "CVE-2019-3878"], "description": "The mod_auth_mellon module is an authentication service that implements the SAML 2.0 federation protocol. It grants access based on the attributes received in assertions generated by a IdP server. ", "modified": "2019-04-10T02:48:32", "published": "2019-04-10T02:48:32", "id": "FEDORA:39D4B6079D04", "href": "", "type": "fedora", "title": "[SECURITY] Fedora 30 Update: mod_auth_mellon-0.14.2-1.fc30", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2020-12-21T08:17:55", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3877", "CVE-2019-3878"], "description": "The mod_auth_mellon module is an authentication service that implements the SAML 2.0 federation protocol. It grants access based on the attributes received in assertions generated by a IdP server. ", "modified": "2019-04-02T02:15:25", "published": "2019-04-02T02:15:25", "id": "FEDORA:004356047C8D", "href": "", "type": "fedora", "title": "[SECURITY] Fedora 29 Update: mod_auth_mellon-0.14.0-5.fc29", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "debian": [{"lastseen": "2019-05-30T02:21:55", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2019-3877"], "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4414-1 security@debian.org\nhttps://www.debian.org/security/ Thijs Kinkhorst\nMarch 23, 2019 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : libapache2-mod-auth-mellon\nCVE ID : CVE-2019-3877 CVE-2019-3878\nDebian Bug : 925197\n\nSeveral issues have been discovered in Apache module auth_mellon, which\nprovides SAML 2.0 authentication.\n\nCVE-2019-3877\n\n It was possible to bypass the redirect URL checking on logout, so\n the module could be used as an open redirect facility.\n\nCVE-2019-3878\n\n When mod_auth_mellon is used in an Apache configuration which\n serves as a remote proxy with the http_proxy module, it was\n possible to bypass authentication by sending SAML ECP headers.\n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 0.12.0-2+deb9u1.\n\nWe recommend that you upgrade your libapache2-mod-auth-mellon packages.\n\nFor the detailed security status of libapache2-mod-auth-mellon please\nrefer to its security tracker page at:\nhttps://security-tracker.debian.org/tracker/libapache2-mod-auth-mellon\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\n\n", "edition": 3, "modified": "2019-03-23T18:33:28", "published": "2019-03-23T18:33:28", "id": "DEBIAN:DSA-4414-1:B5BC1", "href": "https://lists.debian.org/debian-security-announce/debian-security-announce-2019/msg00058.html", "title": "[SECURITY] [DSA 4414-1] libapache2-mod-auth-mellon security update", "type": "debian", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "centos": [{"lastseen": "2020-12-08T03:38:06", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2019-3877"], "description": "**CentOS Errata and Security Advisory** CESA-2019:0766\n\n\nThe mod_auth_mellon module for the Apache HTTP Server is an authentication service that implements the SAML 2.0 federation protocol. The module grants access based on the attributes received in assertions generated by an IdP server.\n\nSecurity Fix(es):\n\n* mod_auth_mellon: authentication bypass in ECP flow (CVE-2019-3878)\n\n* mod_auth_mellon: open redirect in logout url when using URLs with backslashes (CVE-2019-3877)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* mod_auth_mellon Cert files name wrong when hostname contains a number (fixed in upstream package) (BZ#1697487)\n\n**Merged security bulletin from advisories:**\nhttp://lists.centos.org/pipermail/centos-announce/2019-April/035308.html\n\n**Affected packages:**\nmod_auth_mellon\nmod_auth_mellon-diagnostics\n\n**Upstream details at:**\n", "edition": 4, "modified": "2019-04-16T19:39:45", "published": "2019-04-16T19:39:45", "id": "CESA-2019:0766", "href": "http://lists.centos.org/pipermail/centos-announce/2019-April/035308.html", "title": "mod_auth_mellon security update", "type": "centos", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "ubuntu": [{"lastseen": "2020-07-02T11:37:29", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2019-3877"], "description": "It was discovered that mod_auth_mellon incorrectly handled certain requests. \nAn attacker could possibly use this issue to redirect a user to a malicious \nURL. (CVE-2019-3877)\n\nIt was discovered that mod_auth_mellon incorrectly handled certain requests. \nAn attacker could possibly use this issue to access sensitive information. \n(CVE-2019-3878)", "edition": 3, "modified": "2019-03-28T00:00:00", "published": "2019-03-28T00:00:00", "id": "USN-3924-1", "href": "https://ubuntu.com/security/notices/USN-3924-1", "title": "mod_auth_mellon vulnerabilities", "type": "ubuntu", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2020-10-22T19:15:53", "bulletinFamily": "unix", "cvelist": ["CVE-2019-3878", "CVE-2017-6807", "CVE-2019-3877"], "description": "Fran\u00e7ois Kooman discovered that mod_auth_mellon incorrectly handled \ncookies. An attacker could possibly use this issue to cause a Cross-Site \nSession Transfer attack. (CVE-2017-6807)\n\nIt was discovered that mod_auth_mellon incorrectly handled certain requests. \nAn attacker could possibly use this issue to redirect a user to a malicious \nURL. (CVE-2019-3877)\n\nIt was discovered that mod_auth_mellon incorrectly handled certain requests. \nAn attacker could possibly use this issue to access sensitive information. \n(CVE-2019-3878)", "edition": 1, "modified": "2020-10-22T00:00:00", "published": "2020-10-22T00:00:00", "id": "USN-4597-1", "href": "https://ubuntu.com/security/notices/USN-4597-1", "title": "mod_auth_mellon vulnerabilities", "type": "ubuntu", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}]}