CVE-2017-0380: Torproject Tor

Medium severity, CVSS 5.9. EPSS: 1.5% chance of exploitation in the next 30 days.

The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.

Affected products

• Torproject Tor: up to and including 0.2.8.14; version 0.2.9.0 only; version 0.2.9.1 only; version 0.2.9.2 only; version 0.2.9.3 only; version 0.2.9.4 only; …

Published 2017-09-18. Last modified 2026-06-17.