| Name | CVE-2018-0490 |
| Description | An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4183-1 |
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 | wheezy | (not affected) | | | |
| tor | source | jessie | (not affected) | | | |
| tor | source | stretch | 0.2.9.15-1 | | DSA-4183-1 | |
| tor | source | (unstable) | 0.3.2.10-1 | | | |
Notes
[jessie] - tor <not-affected> (Vulnerable code introduced after tor-0.2.9.4-alpha)
[wheezy] - tor <not-affected> (Vulnerable code introduced after tor-0.2.9.4-alpha)
https://trac.torproject.org/projects/tor/ticket/25074
https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915
https://gitweb.torproject.org/tor.git/commit/?id=65f2eec694f18a64291cc85317b9f22dacc1d8e4