Mozilla Thunderbird: Remote code execution — GLSA 202101-14

Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code.

Affected packages

mail-client/thunderbird on all architectures
Affected versions < 78.6.1
Unaffected versions >= 78.6.1
mail-client/thunderbird-bin on all architectures
Affected versions < 78.6.1
Unaffected versions >= 78.6.1

Background

Mozilla Thunderbird is a popular open-source email client from the Mozilla project.

Description

A use-after-free bug was discovered in Mozilla Thunderbird handling of SCTP.

Impact

A remote attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Mozilla Thunderbird users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=mail-client/thunderbird-78.6.1"
 

All Mozilla Thunderbird binary users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose
 ">=mail-client/thunderbird-bin-78.6.1"
 

References

Release date
January 22, 2021

Latest revision
January 22, 2021: 1

Severity
normal

Exploitable
remote

Bugzilla entries