CVE-2011-2769

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-12-23 · updated 2026-06-16
Weakness: CWE-200

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.

Affected products

Tor: through 0.2.2.33; 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.6.1 (+222)

References

http://www.debian.org/security/2011/dsa-2331
https://blog.torproject.org/blog/tor-02234-released-security-patches
http://www.debian.org/security/2011/dsa-2331
https://blog.torproject.org/blog/tor-02234-released-security-patches

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