CVE-2021-43529
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-43529
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:4130
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-43529.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 1:91.3.0-1 |
| debian | bullseye | fixed | 1:91.4.1-1~deb11u1 |
| debian | forky | fixed | 1:91.3.0-1 |
| debian | sid | fixed | 1:91.3.0-1 |
| debian | trixie | fixed | 1:91.3.0-1 |
References
Verify integrity in audit chain (admin only). AS-IS.