Description
Heap-based buffer overflow in Tor before 0.2.1.28 and 0.2.2.x before 0.2.2.20-alpha allows remote attackers to cause a denial of service (daemon 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 | 0.2.1.26-6 | — |
| Debian 13 | tor | 0.2.1.26-6 | — |
| Debian 12 | tor | 0.2.1.26-6 | — |
| Debian 5.0 | tor | 0.2.1.26-1~lenny+4 | DSA-2136-1 |
Advisories 1
- DSA-2136-1 tor - potential code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://blog.torproject.org/blog/tor-02128-released-security-patches
- 42667 third-party-advisory
- http://blog.torproject.org/blog/tor-02220-alpha-out-security-patches
- 1024910 vdb-entry
- https://gitweb.torproject.org/tor.git/blob/release-0.2.1:/ChangeLog
- ADV-2011-0114 vdb-entry
- [or-announce] 20101220 Tor 0.2.1.28 is released (security patches) mailing-list
- ADV-2010-3290 vdb-entry
- GLSA-201101-02 vendor-advisory
- 45500 vdb-entry
- 42916 third-party-advisory
- 42783 third-party-advisory
- 42536 third-party-advisory
- FEDORA-2010-19159 vendor-advisory
- DSA-2136 vendor-advisory
- FEDORA-2010-19147 vendor-advisory