{"api_version":"1","generated_at":"2026-07-23T10:22:32+00:00","cve":"CVE-2010-2951","urls":{"html":"https://cve.report/CVE-2010-2951","api":"https://cve.report/api/cve/CVE-2010-2951.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2010-2951","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2010-2951"},"summary":{"title":"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.","state":"PUBLISHED","assigner":"redhat","published_at":"2010-10-12 21:00:01","updated_at":"2026-04-29 01:13:23"},"problem_types":["NVD-CWE-Other","n/a"],"metrics":[{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"5","severity":"","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"}}],"references":[{"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3021","name":"http://bugs.squid-cache.org/show_bug.cgi?id=3021","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Bug 3021 – Large DNS reply causes crash when no ipv6 resolver present","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch","name":"http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"","mime":"text/x-diff","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2010/08/25/6","name":"http://www.openwall.com/lists/oss-security/2010/08/25/6","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"oss-security - Re: Re: CVE Request -- Squid v3.1.6 -- DoS (crash)\n while processing large DNS replies with no IPv6 resolver present","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://marc.info/?l=squid-users&m=128263555724981&w=2","name":"http://marc.info/?l=squid-users&m=128263555724981&w=2","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"title":"'[squid-users] Squid 3.1.7 is available' - MARC","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2010/08/25/2","name":"http://www.openwall.com/lists/oss-security/2010/08/25/2","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"oss-security - Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large\n DNS replies with no IPv6 resolver present","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072","name":"http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"~squid/squid/3.1 : revision 10072","mime":"text/xml","httpstatus":"200","archivestatus":"200"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=626927","name":"https://bugzilla.redhat.com/show_bug.cgi?id=626927","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"626927 – (CVE-2010-2951) CVE-2010-2951 squid: child assertion failure when processing large DNS replies with no IPv6 resolver present","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://bugs.gentoo.org/show_bug.cgi?id=334263","name":"http://bugs.gentoo.org/show_bug.cgi?id=334263","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"334263 – (CVE-2010-3072) <net-proxy/squid-3.1.8 Multiple vulnerabilities (CVE-2010-3072)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2010/08/24/6","name":"http://www.openwall.com/lists/oss-security/2010/08/24/6","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"oss-security - CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large\n DNS replies with no IPv6 resolver present","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.openwall.com/lists/oss-security/2010/08/24/7","name":"http://www.openwall.com/lists/oss-security/2010/08/24/7","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"oss-security - Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing\n large DNS replies with no IPv6 resolver present","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3009","name":"http://bugs.squid-cache.org/show_bug.cgi?id=3009","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Bug 3009 – epoll fails","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2010-2951","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2010-2951","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2010","cve_id":"2951","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"squid-cache","cpe5":"squid","cpe6":"3.1.6","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-07T02:55:45.461Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"[oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2010/08/25/6"},{"name":"[oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2010/08/24/7"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3009"},{"name":"[squid-users] 20100824 Squid 3.1.7 is available","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://marc.info/?l=squid-users&m=128263555724981&w=2"},{"tags":["x_refsource_CONFIRM","x_transferred"],"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"],"url":"http://bugs.gentoo.org/show_bug.cgi?id=334263"},{"name":"[oss-security] 20100824 CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2010/08/24/6"},{"name":"[oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2010/08/25/2"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2010-10-12T20:00:00.000Z","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat"},"references":[{"name":"[oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2010/08/25/6"},{"name":"[oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2010/08/24/7"},{"tags":["x_refsource_CONFIRM"],"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3009"},{"name":"[squid-users] 20100824 Squid 3.1.7 is available","tags":["mailing-list","x_refsource_MLIST"],"url":"http://marc.info/?l=squid-users&m=128263555724981&w=2"},{"tags":["x_refsource_CONFIRM"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=626927"},{"tags":["x_refsource_CONFIRM"],"url":"http://bugs.squid-cache.org/show_bug.cgi?id=3021"},{"tags":["x_refsource_CONFIRM"],"url":"http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072"},{"tags":["x_refsource_CONFIRM"],"url":"http://bugs.gentoo.org/show_bug.cgi?id=334263"},{"name":"[oss-security] 20100824 CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2010/08/24/6"},{"name":"[oss-security] 20100825 Re: CVE Request -- Squid v3.1.6 -- DoS (crash) while processing large DNS replies with no IPv6 resolver present","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2010/08/25/2"},{"tags":["x_refsource_CONFIRM"],"url":"http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch"}]}},"cveMetadata":{"assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","assignerShortName":"redhat","cveId":"CVE-2010-2951","datePublished":"2010-10-12T20:00:00.000Z","dateReserved":"2010-08-04T00:00:00.000Z","dateUpdated":"2024-08-07T02:55:45.461Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2010-10-12 21:00:01","lastModifiedDate":"2026-04-29 01:13:23","problem_types":["NVD-CWE-Other","n/a"],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:squid-cache:squid:3.1.6:*:*:*:*:*:*:*","matchCriteriaId":"E3AB229E-2C32-410B-BFE2-62DCA734C3F3"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2010","CveId":"2951","Ordinal":"1","Title":"CVE-2010-2951","CVE":"CVE-2010-2951","Year":"2010"},"notes":[{"CveYear":"2010","CveId":"2951","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"CVE-2010-2951"},{"CveYear":"2010","CveId":"2951","Ordinal":"2","NoteData":"2010-10-12","Type":"Other","Title":"Published"}]}}}