Description
Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.
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 | 0.2.2.34-1 | — |
| Debian 13 | tor | 0.2.2.34-1 | — |
| Debian 12 | tor | 0.2.2.34-1 | — |
| Debian 6.0 | tor | 0.2.1.31-1 | DSA-2331-1 |
| Debian 5.0 | tor | 0.2.1.31-1~lenny+1 | DSA-2331-1 |
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-2331-1 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