CVE-2012-4419: Torproject Tor

Medium severity, CVSS 5.0. EPSS: 2.2% chance of exploitation in the next 30 days.

The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.

Affected products

• Torproject Tor: up to and including 0.2.2.38; version 0.0.2 only; version 0.0.3 only; version 0.0.4 only; version 0.0.5 only; version 0.0.6 only; …

Published 2012-09-14. Last modified 2026-06-16.