Mozilla Firefox, Mozilla Thunderbird: Multiple vulnerabilities — GLSA 202012-20

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

Affected packages

Package	www-client/firefox on all architectures
Affected versions	< 84.0
Unaffected versions	>= 78.6.0 >= 84.0

Package	www-client/firefox-bin on all architectures
Affected versions	< 84.0
Unaffected versions	>= 78.6.0 >= 84.0

Package	mail-client/thunderbird on all architectures
Affected versions	< 78.6.0
Unaffected versions	>= 78.6.0

Package	mail-client/thunderbird-bin on all architectures
Affected versions	< 78.6.0
Unaffected versions	>= 78.6.0

Background

Mozilla Firefox is a popular open-source web browser from the Mozilla project.

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

Description

Multiple vulnerabilities have been discovered in Mozilla Firefox and Mozilla Thunderbird. Please review the CVE identifiers referenced below for details.

Impact

Please review the referenced CVE identifiers for details.

Workaround

There is no known workaround at this time.

Resolution

All Mozilla Firefox users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-client/firefox-84.0"

All Mozilla Firefox (bin) users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-client/firefox-bin-84.0"

All Mozilla Firefox ESR users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose
 ">=www-client/firefox-78.6.0:0/esr78"

All Mozilla Firefox ESR (bin) users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose
 ">=www-client/firefox-bin-78.6.0:0/esr78"

All Mozilla Thunderbird users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=mail-client/thunderbird-78.6.0"

All Mozilla Thunderbird (bin) users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose
 ">=mail-client/thunderbird-bin-78.6.0"

References

Release date
December 23, 2020

Latest revision
December 23, 2020: 1

Severity
normal

Exploitable
local, remote

Bugzilla entries

759097