Information disclosure in Tor

CVE-2011-4894

Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection for a directory fetch, which makes it easier for remote attackers to enumerate bridges by observing DirPort connections.

Vulnerability class: Information Disclosure

EPSS: 0.016 (73.6th percentile) — read the EPSS interpretation.

Affected products

  • Tor — versions 0.0.2, 0.0.3, 0.0.4
  • N/a — versions n/a

Weakness classification (CWE)

References