{"id":"CVE-2015-2091","aliases":["DEBIAN-CVE-2015-2091","DLA-170-1","DSA-3177-1","EUVD-2015-2201","GHSA-pgq5-v38c-mjg3"],"status":"published","title":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate...","description":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when \"GnuTLSClientVerify require\" is set, which allows remote attackers to spoof clients via a crafted certificate.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0325,"percentile":0.88416,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-310"],"published":"2015-03-10T00:00:00Z","modified":"2026-06-17T00:23:35Z","fixes":[{"ecosystem":"Debian:6.0","package":"mod-gnutls","fixed_in":["0.5.6-1+squeeze2"],"sources":["osv"]},{"ecosystem":"Debian:7","package":"mod-gnutls","fixed_in":["0.5.10-1.1+deb7u1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:6.0","package":"mod-gnutls","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.6-1+squeeze2"}]}],"versions":["0.5.6-1","0.5.6-1+squeeze1"]},{"source":"osv","ecosystem":"Debian:7","package":"mod-gnutls","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.10-1.1+deb7u1"}]}],"versions":["0.5.10-1.1"]}],"products":[{"vendor":"apache","product":"mod-gnutls"}],"references":[{"url":"https://security.gentoo.org/glsa/201709-04","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred"]},{"url":"http://www.debian.org/security/2015/dsa-3177","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]},{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=578663","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://issues.outoforder.cc/view.php?id=93","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-2091"},{"url":"https://github.com/advisories/GHSA-pgq5-v38c-mjg3"}],"sources":{"cve":[{"id":"CVE-2015-2091","description":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when \"GnuTLSClientVerify require\" is set, which allows remote attackers to spoof clients via a crafted certificate.","status":"published","published":"2015-03-13T14:00:00Z","modified":"2024-08-06T05:02:43.323Z","updated_at":"2026-11-02T14:35:41.976732Z"}],"euvd":[{"id":"EUVD-2015-2201","description":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when \"GnuTLSClientVerify require\" is set, which allows remote attackers to spoof clients via a crafted certificate.","status":"published","published":"2015-03-13T14:00:00Z","modified":"2024-08-06T05:02:43Z","updated_at":"2026-11-03T02:22:13.253223Z"}],"ghsa":[{"id":"GHSA-pgq5-v38c-mjg3","title":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate...","description":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when \"GnuTLSClientVerify require\" is set, which allows remote attackers to spoof clients via a crafted certificate.","status":"published","published":"2022-05-17T00:53:10Z","modified":"2023-02-03T05:02:47Z","updated_at":"2026-11-02T14:53:14.247345Z"}],"nvd":[{"id":"CVE-2015-2091","description":"The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when \"GnuTLSClientVerify require\" is set, which allows remote attackers to spoof clients via a crafted certificate.","status":"published","published":"2015-03-13T14:59:02.02Z","modified":"2026-06-17T00:23:35.02Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-310"],"updated_at":"2026-11-02T14:03:03.313464Z"}],"osv":[{"id":"DLA-170-1","title":"mod-gnutls - security update","status":"published","published":"2015-03-14T00:00:00Z","modified":"2026-03-09T01:18:08.710569Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DSA-3177-1","title":"mod-gnutls - security update","status":"published","published":"2015-03-10T00:00:00Z","modified":"2026-03-09T01:22:49.772633Z","updated_at":"2026-11-02T15:46:15.843838Z"}]}}