CVE-2018-0490: Debian Linux

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.

Affected products

• Debian Debian Linux: version 9.0 only
• Torproject Tor: up to and including 0.2.9.14; from 0.3.1.7, up to and including 0.3.1.9; version 0.3.1.1 only; version 0.3.1.2 only; version 0.3.1.3 only; version 0.3.1.4 only; …

Published 2018-03-05. Last modified 2026-06-17.