Description
Tor before 0.2.8.12 might allow remote attackers to cause a denial of service (client crash) via a crafted hidden service descriptor.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | tor | 0.2.9.8-2 | — |
| Debian 13 | tor | 0.2.9.8-2 | — |
| Debian 12 | tor | 0.2.9.8-2 | — |
| Debian 8 | tor | 0.2.5.12-4 | DSA-3741-1 |
| Debian 7 | tor | 0.2.4.27-3 | DLA-754-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | tor | 0.2.4.27-1ubuntu0.1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tor | 0.4.6.7-2.2 | openSUSE-SU-2024:11469-1 |
Advisories 3
- DLA-754-1 tor - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3741-1 tor - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11469-1 tor-0.4.6.7-2.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- openSUSE-SU-2016:3281 vendor-advisory
- FEDORA-2016-95b4e9077e vendor-advisory
- https://blog.torproject.org/blog/tor-02812-released
- openSUSE-SU-2016:3282 vendor-advisory
- DSA-3741 vendor-advisory
- https://trac.torproject.org/projects/tor/ticket/21018
- FEDORA-2016-76b646637e vendor-advisory
- https://gitweb.torproject.org/tor.git/commit/?id=d978216dea6b21ac38230a59d172139185a68dbd