{"id":"CVE-2012-4502","aliases":["BELL-CVE-2012-4502","DEBIAN-CVE-2012-4502","DSA-2760-1","EUVD-2012-4431","GHSA-93mp-m23x-f3x9","UBUNTU-CVE-2012-4502","openSUSE-SU-2024:10345-1"],"status":"published","title":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a...","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","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":"2026-11-08","score":0.03244,"percentile":0.88389,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189"],"published":"2013-09-18T00:00:00Z","modified":"2026-10-23T17:47:46Z","fixes":[{"ecosystem":"Debian:12","package":"chrony","fixed_in":["1.29-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"chrony","fixed_in":["1.29-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"chrony","fixed_in":["1.29-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"chrony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"chrony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"chrony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29-1"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"chrony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.24-3+squeeze1"}]}],"versions":["1.24-3"],"bundled":2},{"source":"osv","ecosystem":"Debian:7","package":"chrony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.24-3.1+deb7u2"}]}],"versions":["1.24-3.1+deb7u1"],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"chrony","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.1-1.1"}]}],"bundled":4}],"products":[{"vendor":"tuxfamily","product":"chrony"}],"references":[{"url":"http://permalink.gmane.org/gmane.comp.time.chrony.announce/15","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.debian.org/security/2013/dsa-2760","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://seclists.org/oss-sec/2013/q3/332","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch","fix"]},{"url":"http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=846392","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-4502"},{"url":"http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git;a=commitdiff;h=7712455d9aa33d0db0945effaa07e900b85987b1"},{"url":"https://github.com/advisories/GHSA-93mp-m23x-f3x9"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2012-4502","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2012-4502","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2012-4502","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2012-4502","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4502","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4503","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0021","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-1567","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2012-4502","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"published","published":"2013-11-05T21:00:00Z","modified":"2024-09-17T04:24:42.253Z","updated_at":"2026-11-02T14:34:51.584538Z"}],"euvd":[{"id":"EUVD-2012-4431","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"published","published":"2013-11-05T21:00:00Z","modified":"2024-09-17T04:24:42Z","updated_at":"2026-11-03T00:28:23.50734Z"}],"ghsa":[{"id":"GHSA-93mp-m23x-f3x9","title":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a...","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"published","published":"2022-05-17T04:58:31Z","modified":"2025-04-11T04:15:47Z","updated_at":"2026-11-02T15:01:14.923786Z"}],"nvd":[{"id":"CVE-2012-4502","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"published","published":"2013-11-05T21:55:08.047Z","modified":"2026-06-16T23:45:13.097Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:02:17.375282Z"}],"osv":[{"id":"BELL-CVE-2012-4502","title":"CVE-2012-4502 does not affect BellSoft software","status":"withdrawn","published":"2013-11-05T21:55:00Z","modified":"2026-01-28T07:19:19.993114Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium"}],"updated_at":"2026-11-02T15:28:13.47097Z"},{"id":"CVE-2012-4502","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"published","published":"2013-11-05T21:55:08Z","modified":"2026-04-10T03:42:28.665636Z","updated_at":"2026-11-02T15:43:58.537032Z"},{"id":"DEBIAN-CVE-2012-4502","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"published","published":"2013-11-05T21:55:08.047Z","modified":"2026-10-23T17:47:46.85617954Z","updated_at":"2026-11-02T15:45:25.218101Z"},{"id":"DSA-2760-1","title":"chrony - several","status":"published","published":"2013-09-18T00:00:00Z","modified":"2026-03-09T01:19:22.371645Z","updated_at":"2026-11-02T15:46:15.489951Z"},{"id":"openSUSE-SU-2024:10345-1","title":"chrony-2.4.1-1.1 on GA media","description":"These are all security issues fixed in the chrony-2.4.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:02:32.739537Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"UBUNTU-CVE-2012-4502","description":"Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow.  NOTE: versions 1.27 and 1.28 do not require authentication to exploit.","status":"withdrawn","published":"2013-11-05T21:55:00Z","modified":"2025-07-16T07:31:01.716434Z","updated_at":"2026-11-02T15:54:06.854805Z"}]}}