{"id":"CVE-2012-4436","aliases":["DEBIAN-CVE-2012-4436","EUVD-2012-4370","GHSA-f5j9-5h8m-c8mw","UBUNTU-CVE-2012-4436"],"status":"published","title":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when...","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","severity":{"version":"2.0","score":4.4,"vector":"AV:L/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00656,"percentile":0.51678,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2012-10-22T23:00:00Z","modified":"2026-10-23T17:47:39Z","fixes":[{"ecosystem":"Debian:12","package":"fwknop","fixed_in":["2.0.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"fwknop","fixed_in":["2.0.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"fwknop","fixed_in":["2.0.3-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"fwknop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"fwknop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"fwknop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-1"}]}]}],"products":[{"vendor":"cipherdyne","product":"fwknop"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2012/09/19/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2012/09/20/4","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=a60f05ad44e824f6230b22f8976399340cb535dc","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-4436"},{"url":"http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git;a=commitdiff;h=a60f05ad44e824f6230b22f8976399340cb535dc"},{"url":"https://github.com/advisories/GHSA-f5j9-5h8m-c8mw"},{"url":"https://security-tracker.debian.org/tracker/CVE-2012-4436","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2012-4436","tags":["report"]},{"url":"http://seclists.org/oss-sec/2012/q3/509","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2012-4436","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2012-4436","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"published","published":"2012-10-22T23:00:00Z","modified":"2024-09-16T19:10:39.397Z","updated_at":"2026-11-02T14:34:51.584538Z"}],"euvd":[{"id":"EUVD-2012-4370","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"published","published":"2012-10-22T23:00:00Z","modified":"2024-09-16T19:10:39Z","updated_at":"2026-11-03T00:55:25.259735Z"}],"ghsa":[{"id":"GHSA-f5j9-5h8m-c8mw","title":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when...","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"published","published":"2022-05-17T05:18:47Z","modified":"2025-04-11T04:05:18Z","cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:12.54248Z"}],"nvd":[{"id":"CVE-2012-4436","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"published","published":"2012-10-22T23:55:07.133Z","modified":"2026-06-16T23:45:05.813Z","cvss":[{"version":"2.0","score":4.4,"vector":"AV:L/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:16.536025Z"}],"osv":[{"id":"CVE-2012-4436","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"published","published":"2012-10-22T23:55:07Z","modified":"2026-04-10T03:42:28.236595Z","updated_at":"2026-11-02T15:43:58.537032Z"},{"id":"DEBIAN-CVE-2012-4436","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"published","published":"2012-10-22T23:55:07.133Z","modified":"2026-10-23T17:47:39.443450301Z","updated_at":"2026-11-02T15:45:25.218101Z"},{"id":"UBUNTU-CVE-2012-4436","description":"Buffer overflow in the run_last_args function in client/fwknop.c in fwknop before 2.0.3, when processing --last, might allow local users to cause a denial of service (client crash) and possibly execute arbitrary code via many .fwknop.run arguments.","status":"withdrawn","published":"2012-10-22T23:55:00Z","modified":"2025-07-16T07:31:01.361964Z","updated_at":"2026-11-02T15:54:06.854805Z"}]}}