| Name | CVE-2015-2689 |
| Description | Tor before 0.2.4.26 and 0.2.5.x before 0.2.5.11 does not properly handle pending-connection resolve states during periods of high DNS load, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via crafted packets. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-178-1, DSA-3203-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| tor (PTS) | jessie, jessie (lts) | 0.2.5.16-1 | fixed |
| stretch | 0.2.9.16-1 | fixed |
| stretch (security), stretch (lts) | 0.2.9.15-1 | fixed |
| buster (security), buster, buster (lts) | 0.3.5.16-1+deb10u1 | fixed |
| bullseye (security), bullseye | 0.4.5.16-1 | fixed |
| bookworm (security), bookworm | 0.4.7.16-1 | fixed |
| sid, trixie | 0.4.8.13-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| tor | source | squeeze | 0.2.4.26-1~deb6u1 | | DLA-178-1 | |
| tor | source | wheezy | 0.2.4.26-1 | | DSA-3203-1 | |
| tor | source | (unstable) | 0.2.5.11-1 | | | |
Notes
https://bugs.torproject.org/14129