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CVE-2020-26970

Published: 9 December 2020

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.

Priority

Medium

CVSS 3 base score: 8.8

Status

Package Release Status
thunderbird
Launchpad, Ubuntu, Debian
bionic
Released (1:78.8.1+build1-0ubuntu0.18.04.1)
focal
Released (1:78.7.1+build1-0ubuntu0.20.04.1)
groovy
Released (1:78.6.1+build1-0ubuntu0.20.10.1)
hirsute
Released (1:78.5.1+build1-0ubuntu1)
impish
Released (1:78.5.1+build1-0ubuntu1)
jammy
Released (1:78.5.1+build1-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (78.5.1)
xenial Needs triage