{"id":"CVE-2012-3517","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-3517","generatedAt":"2026-10-27T17:57:21.731Z","title":"Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.","description":"Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.","published":"2012-08-26T03:17:44.000Z","lastModified":"2026-06-16T23:43:23.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":["CWE-399"],"affected":["tor/tor"],"epss":{"score":0.02775,"percentile":0.86258,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.77%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html","source":"secalert@redhat.com"},{"url":"http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html","source":"secalert@redhat.com"},{"url":"http://openwall.com/lists/oss-security/2012/08/21/6","source":"secalert@redhat.com"},{"url":"http://security.gentoo.org/glsa/glsa-201301-03.xml","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=849949","source":"secalert@redhat.com"},{"url":"https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c","source":"secalert@redhat.com"},{"url":"https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html","source":"secalert@redhat.com"},{"url":"https://trac.torproject.org/projects/tor/ticket/6480","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://openwall.com/lists/oss-security/2012/08/21/6","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-201301-03.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=849949","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitweb.torproject.org/tor.git/commit/62637fa22405278758febb1743da9af562524d4c","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://trac.torproject.org/projects/tor/ticket/6480","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-3517","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}