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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0.2.8.9-1 |
| debian | bullseye | fixed | 0.2.8.9-1 |
| debian | forky | fixed | 0.2.8.9-1 |
| debian | sid | fixed | 0.2.8.9-1 |
| debian | trixie | fixed | 0.2.8.9-1 |
References
- http://openwall.com/lists/oss-security/2016/10/19/11
- http://www.debian.org/security/2016/dsa-3694
- http://www.securityfocus.com/bid/95116
- https://blog.torproject.org/blog/tor-0289-released-important-fixes
- https://github.com/torproject/tor/commit/3cea86eb2fbb65949673eb4ba8ebb695c87a57ce
- https://security.gentoo.org/glsa/201612-45
- https://trac.torproject.org/projects/tor/ticket/20384
- https://security-tracker.debian.org/tracker/CVE-2016-8860
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.