{"id":"CVE-2011-0427","aliases":["DEBIAN-CVE-2011-0427","DSA-2148-1","EUVD-2011-0453","GHSA-2v69-c83c-r4mh","openSUSE-SU-2024:10423-1"],"status":"published","title":"Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote...","description":"Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.04444,"percentile":0.9147,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2011-01-17T00:00:00Z","modified":"2026-10-23T17:47:51Z","fixes":[{"ecosystem":"Debian:12","package":"tor","fixed_in":["0.2.1.29-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"tor","fixed_in":["0.2.1.29-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"tor","fixed_in":["0.2.1.29-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.1.29-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.1.29-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.1.29-1"}]}]},{"source":"osv","ecosystem":"Debian:5.0","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.1.29-1~lenny+1"}]}],"versions":["0.2.0.33-1","0.2.0.34-1","0.2.0.34-1~bpo40+1","0.2.0.35-1","0.2.0.35-1~lenny1","0.2.0.35-1~lenny2","0.2.1.10-alpha-1","0.2.1.11-alpha-1","0.2.1.12-alpha-1","0.2.1.13-alpha-1","0.2.1.14-rc-1","0.2.1.15-rc-1","0.2.1.16-rc-1","0.2.1.17-rc-1","0.2.1.18-1","0.2.1.19-1","0.2.1.2-alpha-1","0.2.1.20-1","0.2.1.20-2","0.2.1.21-1","0.2.1.21-1~bpo50+1","0.2.1.22-1","0.2.1.22-1~bpo50+1","0.2.1.23-1","0.2.1.23-2","0.2.1.25-1","0.2.1.25-1~bpo50+1","0.2.1.25-2","0.2.1.25-3","0.2.1.26-1","0.2.1.26-1~bpo50+1","0.2.1.26-1~lenny+1","0.2.1.26-1~lenny+2","0.2.1.26-1~lenny+4","0.2.1.26-1~lennyvolatile1","0.2.1.26-1~lennyvolatile2","0.2.1.26-2","0.2.1.26-3","0.2.1.26-4","0.2.1.26-4~bpo50+1","0.2.1.26-5","0.2.1.26-6","0.2.1.26-6~bpo50+1","0.2.1.4-alpha-1","0.2.1.5-alpha-1","0.2.1.6-alpha-1","0.2.1.7-alpha-1","0.2.1.7-alpha-2","0.2.1.8-alpha-1","0.2.1.9-alpha-1"],"bundled":7},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8.11-1.1"}]}],"bundled":22}],"products":[{"vendor":"tor","product":"tor"}],"references":[{"url":"http://archives.seul.org/or/announce/Jan-2011/msg00000.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Patch","fix"]},{"url":"http://www.vupen.com/english/advisories/2011/0131","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory","advisory"]},{"url":"https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"http://secunia.com/advisories/42907","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://blog.torproject.org/blog/tor-02129-released-security-patches","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"http://www.securitytracker.com/id?1024980","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64748","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"http://www.vupen.com/english/advisories/2011/0132","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.debian.org/security/2011/dsa-2148","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://secunia.com/advisories/42905","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"http://www.securityfocus.com/bid/45832","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0427"},{"url":"https://github.com/advisories/GHSA-2v69-c83c-r4mh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-0427","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2011-0427","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-2768","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-2769","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-2778","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4576","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4894","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4895","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4896","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-4897","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-3517","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-3518","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-3519","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4419","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-4922","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-5573","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-7295","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-0160","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-5117","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-2688","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-2689","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-2928","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-2929","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2011-0427","description":"Heap-based 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and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.","status":"published","published":"2022-05-17T02:02:23Z","modified":"2023-01-27T05:00:49Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:41:45.307734Z"}],"nvd":[{"id":"CVE-2011-0427","description":"Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.","status":"published","published":"2011-01-19T12:00:19.75Z","modified":"2026-06-16T23:27:20.113Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:06.042049Z"}],"osv":[{"id":"CVE-2011-0427","description":"Heap-based buffer overflow in Tor before 0.2.1.29 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several","status":"published","published":"2011-01-17T00:00:00Z","modified":"2026-03-09T01:21:57.905962Z","updated_at":"2026-11-02T15:46:15.108335Z"},{"id":"openSUSE-SU-2024:10423-1","title":"tor-0.2.8.11-1.1 on GA media","description":"These are all security issues fixed in the tor-0.2.8.11-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:22:58.106216Z","updated_at":"2026-11-02T16:58:34.487567Z"}]}}