CVE-2021-43529
Published: 16 February 2023
Thunderbird versions prior to 91.3.0 are vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS signatures.
Priority
Status
Package | Release | Status |
---|---|---|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Released
(1:91.5.0+build1-0ubuntu0.18.04.1)
|
focal |
Released
(1:91.5.0+build1-0ubuntu0.20.04.1)
|
|
impish |
Not vulnerable
(1:91.3.1+build1-0ubuntu0.21.10.2)
|
|
kinetic |
Not vulnerable
|
|
lunar |
Not vulnerable
|
|
trusty |
Ignored
(end of standard support)
|
|
upstream |
Released
(1:91.3.0-1)
|
|
xenial |
Ignored
(end of standard support)
|
|
hirsute |
Ignored
(end of life)
|
|
jammy |
Not vulnerable
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 9.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |