Description
Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.
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 | 0.2.1.29-1 | — |
| Debian 13 | tor | 0.2.1.29-1 | — |
| Debian 12 | tor | 0.2.1.29-1 | — |
| Debian 5.0 | tor | 0.2.1.29-1~lenny+1 | DSA-2148-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | tor | 0.2.8.11-1.1 | openSUSE-SU-2024:10423-1 |
Advisories 2
- DSA-2148-1 tor - several Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10423-1 tor-0.2.8.11-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [or-announce] 20110117 Tor 0.2.1.29 is released (security patches) mailing-list
- ADV-2011-0131 vdb-entry
- https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
- 42907 third-party-advisory
- http://blog.torproject.org/blog/tor-02129-released-security-patches
- 1024980 vdb-entry
- tor-unspec-bo(64748) vdb-entry
- ADV-2011-0132 vdb-entry
- DSA-2148 vendor-advisory
- 42905 third-party-advisory
- 45832 vdb-entry