{"id":"CVE-2010-2951","aliases":["EUVD-2010-2955","GHSA-9vw9-fpw4-vvf6"],"status":"published","title":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid...","description":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.31465,"percentile":0.98295,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2010-10-12T20:00:00Z","modified":"2026-06-16T23:21:49Z","products":[{"vendor":"squid-cache","product":"squid"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2010/08/25/6","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2010/08/24/7","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3009","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://marc.info/?l=squid-users\u0026m=128263555724981\u0026w=2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=626927","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3021","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"http://bugs.gentoo.org/show_bug.cgi?id=334263","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2010/08/24/6","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"http://www.openwall.com/lists/oss-security/2010/08/25/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch"]},{"url":"http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch","tags":["x_refsource_CONFIRM","x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-2951"},{"url":"https://github.com/advisories/GHSA-9vw9-fpw4-vvf6"}],"sources":{"cve":[{"id":"CVE-2010-2951","description":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.","status":"published","published":"2010-10-12T20:00:00Z","modified":"2024-08-07T02:55:45.461Z","updated_at":"2026-11-02T14:33:27.354104Z"}],"euvd":[{"id":"EUVD-2010-2955","description":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.","status":"published","published":"2010-10-12T20:00:00Z","modified":"2024-08-07T02:55:45Z","updated_at":"2026-11-03T01:39:35.901913Z"}],"ghsa":[{"id":"GHSA-9vw9-fpw4-vvf6","title":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid...","description":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.","status":"published","published":"2022-05-17T05:47:44Z","modified":"2023-01-28T05:04:58Z","updated_at":"2026-11-02T14:44:16.563052Z"}],"nvd":[{"id":"CVE-2010-2951","description":"dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.","status":"published","published":"2010-10-12T21:00:01.71Z","modified":"2026-06-16T23:21:49.333Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:57.065463Z"}]}}