CVE-2021-38502
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-38502
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3838
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 91.2.0-1 | |
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 1:91.2.1-1 |
| debian | bullseye | fixed | 1:91.4.1-1~deb11u1 |
| debian | forky | fixed | 1:91.2.1-1 |
| debian | sid | fixed | 1:91.2.1-1 |
| debian | trixie | fixed | 1:91.2.1-1 |
References
Verify integrity in audit chain (admin only). AS-IS.