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CVE-2021-38385

Published: 30 August 2021

Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and single-signature verification, leading to a remote assertion failure, aka TROVE-2021-007.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
tor
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(code not present)
upstream
Released (0.4.5.10-1)
impish Ignored
(end of life)
hirsute Ignored
(end of life)
jammy Not vulnerable
(0.4.6.10-1)
bionic
Released (0.3.2.10-1ubuntu0.2~esm2)
Available with Ubuntu Pro
kinetic Not vulnerable
(0.4.7.10-1)
xenial
Released (0.2.9.14-1ubuntu1~16.04.3+esm1)
Available with Ubuntu Pro
lunar Not vulnerable
(0.4.7.10-1)
focal
Released (0.4.2.7-1ubuntu0.1~esm1)
Available with Ubuntu Pro
mantic Not vulnerable
(0.4.7.10-1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H