{"id":"CVE-2011-0490","aliases":["DEBIAN-CVE-2011-0490","DSA-2148-1","EUVD-2011-0510","GHSA-xwc2-2xh3-v7qg"],"status":"published","title":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log...","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","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":"2026-11-07","score":0.02517,"percentile":0.8492,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2011-01-17T00:00:00Z","modified":"2026-10-23T17:47:27Z","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}],"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":"https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog","tags":["x_refsource_CONFIRM","x_transferred","Patch","fix"]},{"url":"http://blog.torproject.org/blog/tor-02129-released-security-patches","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/64889","tags":["vdb-entry","x_refsource_XF","x_transferred","web"]},{"url":"https://trac.torproject.org/projects/tor/ticket/2190","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/45953","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-0490"},{"url":"https://github.com/advisories/GHSA-xwc2-2xh3-v7qg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-0490","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2011-0490","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","status":"published","published":"2011-01-19T11:00:00Z","modified":"2024-08-06T21:51:08.86Z","updated_at":"2026-11-02T14:35:39.447402Z"}],"euvd":[{"id":"EUVD-2011-0510","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","status":"published","published":"2011-01-19T11:00:00Z","modified":"2024-08-06T21:51:08Z","updated_at":"2026-11-03T01:56:00.140679Z"}],"ghsa":[{"id":"GHSA-xwc2-2xh3-v7qg","title":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log...","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","status":"published","published":"2022-05-17T02:02:17Z","modified":"2023-01-27T05:00:48Z","updated_at":"2026-11-02T14:41:45.307734Z"}],"nvd":[{"id":"CVE-2011-0490","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","status":"published","published":"2011-01-19T12:00:19.92Z","modified":"2026-06-16T23:27:29.62Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:02:06.042049Z"}],"osv":[{"id":"CVE-2011-0490","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","status":"published","published":"2011-01-19T12:00:19Z","modified":"2026-04-10T03:41:38.702751Z","updated_at":"2026-11-02T15:43:57.991581Z"},{"id":"DEBIAN-CVE-2011-0490","description":"Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.","status":"published","published":"2011-01-19T12:00:19.92Z","modified":"2026-10-23T17:47:27.253569341Z","updated_at":"2026-11-02T15:45:24.316685Z"},{"id":"DSA-2148-1","title":"tor - several","status":"published","published":"2011-01-17T00:00:00Z","modified":"2026-03-09T01:21:57.905962Z","updated_at":"2026-11-02T15:46:15.108335Z"}]}}