{"id":"CVE-2011-4895","aliases":["DEBIAN-CVE-2011-4895","EUVD-2011-4812","GHSA-vv8x-qxvx-9wjx","openSUSE-SU-2024:10423-1"],"status":"published","title":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different...","description":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the process used by a client, which makes it easier for remote attackers to enumerate bridges by observing circuit building.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01528,"percentile":0.74882,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2011-12-23T02:00:00Z","modified":"2026-10-23T17:47:45Z","fixes":[{"ecosystem":"Debian:12","package":"tor","fixed_in":["0.2.2.34-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"tor","fixed_in":["0.2.2.34-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"tor","fixed_in":["0.2.2.34-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.2.34-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.2.34-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.2.34-1"}]}]},{"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":"https://blog.torproject.org/blog/tor-02234-released-security-patches","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4895"},{"url":"https://github.com/advisories/GHSA-vv8x-qxvx-9wjx"},{"url":"https://security-tracker.debian.org/tracker/CVE-2011-4895","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-2011-4895","description":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the process used by a client, which makes it easier for remote attackers to enumerate bridges by observing circuit building.","status":"published","published":"2011-12-23T02:00:00Z","modified":"2024-09-17T01:55:32.706Z","updated_at":"2026-11-02T14:35:37.671707Z"}],"euvd":[{"id":"EUVD-2011-4812","description":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the process used by a client, which makes it easier for remote attackers to enumerate bridges by observing circuit building.","status":"published","published":"2011-12-23T02:00:00Z","modified":"2024-09-17T01:55:32Z","updated_at":"2026-11-03T00:28:45.722533Z"}],"ghsa":[{"id":"GHSA-vv8x-qxvx-9wjx","title":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different...","description":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits 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from the process used by a client, which makes it easier for remote attackers to enumerate bridges by observing circuit building.","status":"published","published":"2011-12-23T03:59:22Z","modified":"2026-04-10T03:44:09.759964Z","updated_at":"2026-11-02T15:43:58.279353Z"},{"id":"DEBIAN-CVE-2011-4895","description":"Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the process used by a client, which makes it easier for remote attackers to enumerate bridges by observing circuit building.","status":"published","published":"2011-12-23T03:59:22.097Z","modified":"2026-10-23T17:47:45.767794105Z","updated_at":"2026-11-02T15:45:24.612044Z"},{"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"}]}}