Description
Tor client before 0.1.1.20 prefers entry points based on is_fast or is_stable flags, which could allow remote attackers to be preferred over nodes that are identified as more trustworthy "entry guard" (is_guard) systems by directory authorities.
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
- 25879 vdb-entry
- 20514 third-party-advisory
- GLSA-200606-04 vendor-advisory
- http://tor.eff.org/cvs/tor/ChangeLog