{"id":"CVE-2012-4922","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-4922","generatedAt":"2026-10-28T03:22:10.568Z","title":"The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed…","description":"The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed directory object, a different vulnerability than CVE-2012-4419.","published":"2012-09-14T18:55:05.000Z","lastModified":"2026-06-16T23:45:54.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":["CWE-20"],"affected":["torproject/tor"],"epss":{"score":0.02233,"percentile":0.82662,"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 (2.23%). 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":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2012-10/msg00005.html","source":"cve@mitre.org"},{"url":"http://openwall.com/lists/oss-security/2012/09/12/5","source":"cve@mitre.org"},{"url":"http://security.gentoo.org/glsa/glsa-201301-03.xml","source":"cve@mitre.org"},{"url":"https://gitweb.torproject.org/tor.git/blob/release-0.2.2:/ReleaseNotes","source":"cve@mitre.org"},{"url":"https://gitweb.torproject.org/tor.git/commit/973c18bf0e84d14d8006a9ae97fde7f7fb97e404","source":"cve@mitre.org"},{"url":"https://lists.torproject.org/pipermail/tor-talk/2012-September/025501.html","source":"cve@mitre.org"},{"url":"https://trac.torproject.org/projects/tor/ticket/6811","source":"cve@mitre.org"},{"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/2012-10/msg00005.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://openwall.com/lists/oss-security/2012/09/12/5","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-201301-03.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitweb.torproject.org/tor.git/blob/release-0.2.2:/ReleaseNotes","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://gitweb.torproject.org/tor.git/commit/973c18bf0e84d14d8006a9ae97fde7f7fb97e404","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.torproject.org/pipermail/tor-talk/2012-September/025501.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://trac.torproject.org/projects/tor/ticket/6811","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-4922","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."}