CVE-2018-18509
critical
CVSS v3
—
CVSS v2
—
VIR risk
9.5
Description
A flaw during verification of certain S/MIME signatures causes emails to be shown in Thunderbird as having a valid digital signature, even if the shown message contents aren't covered by the signature. The flaw allows an attacker to reuse a valid S/MIME signature to craft an email message with arbitrary content. This vulnerability affects Thunderbird < 60.5.1.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-18509
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-23
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 60.5.1-1 | |
| debian | bookworm | fixed | 1:60.5.1-1 |
| debian | bullseye | fixed | 1:60.5.1-1 |
| debian | forky | fixed | 1:60.5.1-1 |
| debian | sid | fixed | 1:60.5.1-1 |
| debian | trixie | fixed | 1:60.5.1-1 |
References
Verify integrity in audit chain (admin only). AS-IS.