Description
Tor before 0.1.1.20 supports server descriptors that contain hostnames instead of IP addresses, which allows remote attackers to arbitrarily group users by providing preferential address resolution.
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 | 0.1.1.20-1 | — |
| Debian 13 | tor | 0.1.1.20-1 | — |
| Debian 12 | tor | 0.1.1.20-1 | — |
References
- 20514 third-party-advisory
- GLSA-200606-04 vendor-advisory
- http://tor.eff.org/cvs/tor/ChangeLog
- 25877 vdb-entry