CVE-2021-43529
thunderbirdVulnerabilityCVSS 9.8Patched
No public exploitation has been reported so far. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 3.1 : 9.8 CRITICAL
Attack vectorNetwork (remote)
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Debian:11 | thunderbird | - | 1:91.4.1-1~deb11u1 | fixed |
| Debian:12 | thunderbird | - | 1:91.3.0-1 | fixed |
| Debian:13 | thunderbird | - | 1:91.3.0-1 | fixed |
| Debian:14 | thunderbird | - | 1:91.3.0-1 | fixed |
| Debian:9 | thunderbird | - | 1:91.4.1-1~deb9u1 | fixed |
| Debian:10 | thunderbird | - | 1:91.4.1-1~deb10u1 | fixed |
| Ubuntu:18.04:LTS | thunderbird | - | 1:91.5.0+build1-0ubuntu0.18.04.1 | fixed |
| Ubuntu:20.04:LTS | thunderbird | - | 1:91.5.0+build1-0ubuntu0.20.04.1 | fixed |
| Red Hat:enterprise_linux:8::appstream | thunderbird | - | 0:91.3.0-2.el8_4 | fixed |
| Red Hat:rhel_eus:8.2::appstream | thunderbird | - | 0:91.3.0-2.el8_2 | fixed |
| Red Hat:rhel_eus:8.1::appstream | thunderbird | - | 0:91.3.0-2.el8_1 | fixed |
| Red Hat:enterprise_linux:7::client | thunderbird | - | 0:91.3.0-2.el7_9 | fixed |
| Red Hat:enterprise_linux:7::server | thunderbird | - | 0:91.3.0-2.el7_9 | fixed |
| Red Hat:enterprise_linux:7::workstation | thunderbird | - | 0:91.3.0-2.el7_9 | fixed |