{"id":"CVE-2016-8860","aliases":["DEBIAN-CVE-2016-8860","DLA-663-1","DSA-3694-1","EUVD-2016-9685","GHSA-r9f4-f6pw-gqm4","MGASA-2016-0356","UBUNTU-CVE-2016-8860"],"status":"published","title":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to...","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.0193,"percentile":0.80131,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2016-10-18T00:00:00Z","modified":"2026-10-24T14:12:01Z","fixes":[{"ecosystem":"Debian:12","package":"tor","fixed_in":["0.2.8.9-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"tor","fixed_in":["0.2.8.9-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"tor","fixed_in":["0.2.8.9-1"],"sources":["osv"]},{"ecosystem":"Debian:7","package":"tor","fixed_in":["0.2.4.27-2"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"tor","fixed_in":["0.2.5.12-3"],"sources":["osv"]},{"ecosystem":"Mageia:5","package":"tor","fixed_in":["0.2.8.9-1.mga5"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"tor","fixed_in":["0.2.4.27-1ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8.9-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8.9-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8.9-1"}]}]},{"source":"osv","ecosystem":"Debian:7","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.4.27-2"}]}],"versions":["0.2.3.25-1","0.2.4.1-alpha-1","0.2.4.10-alpha-1","0.2.4.11-alpha-1","0.2.4.12-alpha-1","0.2.4.12-alpha-2","0.2.4.13-alpha-1","0.2.4.14-alpha-1","0.2.4.15-rc-1","0.2.4.16-rc-1","0.2.4.17-rc-1","0.2.4.18-rc-1","0.2.4.19-1","0.2.4.2-alpha-1","0.2.4.20-1","0.2.4.21-1","0.2.4.22-1","0.2.4.22-1~bpo70+1","0.2.4.22-1~deb7u1","0.2.4.23-1","0.2.4.23-1~deb6u1","0.2.4.23-1~deb7u1","0.2.4.24-1","0.2.4.26-1","0.2.4.26-1~deb6u1","0.2.4.27-1","0.2.4.27-1~deb6u1","0.2.4.3-alpha-1","0.2.4.4-alpha-1","0.2.4.5-alpha-1","0.2.4.6-alpha-1","0.2.4.7-alpha-1","0.2.4.9-alpha-1"]},{"source":"osv","ecosystem":"Debian:8","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.5.12-3"}]}],"versions":["0.2.5.12-1","0.2.5.12-2"]},{"source":"osv","ecosystem":"Mageia:5","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8.9-1.mga5"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"tor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.4.27-1ubuntu0.1"}]}],"versions":["0.2.3.25-1","0.2.4.19-1","0.2.4.20-1","0.2.4.27-1build0.14.04.1"]}],"products":[{"vendor":"torproject","product":"tor"}],"references":[{"url":"https://blog.torproject.org/blog/tor-0289-released-important-fixes","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory","advisory","web","report"]},{"url":"https://github.com/torproject/tor/commit/3cea86eb2fbb65949673eb4ba8ebb695c87a57ce","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory","fix","report"]},{"url":"https://security.gentoo.org/glsa/201612-45","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"http://openwall.com/lists/oss-security/2016/10/19/11","tags":["mailing-list","x_refsource_MLIST","x_transferred","Third Party Advisory","advisory"]},{"url":"https://trac.torproject.org/projects/tor/ticket/20384","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","report"]},{"url":"http://www.securityfocus.com/bid/95116","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://www.debian.org/security/2016/dsa-3694","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-8860"},{"url":"https://github.com/advisories/GHSA-r9f4-f6pw-gqm4"},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-8860","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2016-0356.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=19145","tags":["report"]},{"url":"https://blog.torproject.org/blog/tor-0286-released","tags":["web"]},{"url":"https://blog.torproject.org/blog/tor-0287-released-important-fixes","tags":["web"]},{"url":"https://blog.torproject.org/blog/tor-0288-released-important-fixes","tags":["web"]},{"url":"https://www.debian.org/security/2016/dsa-3694","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2016-8860","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2016/10/18/11","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-8860","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-8860","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2017-01-04T20:00:00Z","modified":"2024-08-06T02:35:01.107Z","updated_at":"2026-11-02T14:33:32.415289Z"}],"euvd":[{"id":"EUVD-2016-9685","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2017-01-04T20:00:00Z","modified":"2024-08-06T02:35:01Z","updated_at":"2026-11-03T02:22:29.188942Z"}],"ghsa":[{"id":"GHSA-r9f4-f6pw-gqm4","title":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to...","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2022-05-17T02:37:02Z","modified":"2023-01-27T05:05:51Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:42:47.147954Z"}],"nvd":[{"id":"CVE-2016-8860","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2017-01-04T20:59:00.34Z","modified":"2026-06-17T00:55:05.65Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:03:33.686843Z"}],"osv":[{"id":"CVE-2016-8860","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2017-01-04T20:59:00.34Z","modified":"2026-10-24T14:12:01.464112172Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:03.171316Z"},{"id":"DEBIAN-CVE-2016-8860","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2017-01-04T20:59:00.34Z","modified":"2026-09-22T07:02:15.441094474Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:28.207321Z"},{"id":"UBUNTU-CVE-2016-8860","description":"Tor before 0.2.8.9 and 0.2.9.x before 0.2.9.4-alpha had internal functions that were entitled to expect that buf_t data had NUL termination, but the implementation of or/buffers.c did not ensure that NUL termination was present, which allows remote attackers to cause a denial of service (client, hidden service, relay, or authority crash) via crafted data.","status":"published","published":"2017-01-04T20:59:00Z","modified":"2025-09-08T16:43:55Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:12.994319Z"},{"id":"DLA-663-1","title":"tor - security update","status":"published","published":"2016-10-18T00:00:00Z","modified":"2026-03-09T02:08:36.632575Z","updated_at":"2026-11-02T15:46:13.207219Z"},{"id":"DSA-3694-1","title":"tor - security update","status":"published","published":"2016-10-18T00:00:00Z","modified":"2026-03-09T02:09:23.048346Z","updated_at":"2026-11-02T15:46:16.523846Z"},{"id":"MGASA-2016-0356","title":"Updated tor packages fix security vulnerability","description":"It has been discovered that Tor treats the contents of some buffer chunks\nas if they were a NUL-terminated string. This issue could enable a remote\nattacker to crash a Tor client, hidden service, relay, or authority\n(CVE-2016-8860).\n\nThe tor package has been updated to version 0.2.8.9, which fixes this\nissue and several other bugs, including other security issues fixed in\n0.2.8.6.  See the release announcements for details.\n","status":"published","published":"2016-10-25T23:11:42Z","modified":"2026-04-16T06:24:02.378375974Z","updated_at":"2026-11-02T15:49:40.103088Z"}]}}