CVE-2017-8820

Name of the Vulnerable Software and Affected Versions Tor versions 0.2.5 through 0.2.5.15 Tor versions 0.2.6 through 0.2.8.16 Tor versions 0.2.9 through 0.2.9.13 Tor versions 0.3.0 through 0.3.0.12 Tor versions 0.3.1 through 0.3.1.8

Description The issue allows remote attackers to cause a denial of service against directory authorities via a malformed descriptor. This can result in a NULL pointer dereference and application crash.

Recommendations For Tor versions 0.2.5 through 0.2.5.15, update to version 0.2.5.16 or later. For Tor versions 0.2.6 through 0.2.8.16, update to version 0.2.8.17 or later. For Tor versions 0.2.9 through 0.2.9.13, update to version 0.2.9.14 or later. For Tor versions 0.3.0 through 0.3.0.12, update to version 0.3.0.13 or later. For Tor versions 0.3.1 through 0.3.1.8, update to version 0.3.1.9 or later.