Vulnerability in Mozilla Thunderbird
CVE-2023-50761
The signature of a digitally signed S/MIME email message may optionally specify the signature creation date and time. If present, Thunderbird did not compare the signature creation date with the message date and time, and displayed a valid signature despite a date or time mismatch. This could be used to give recipients the impression that a message was sent at a different date or time. This vulnerability affects Thunderbird < 115.6.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 11.0, 12.0
References
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2023-55/ (Vendor Advisory)
- www.debian.org/security/2023/dsa-5582 (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/12/msg00021.html
Frequently asked questions
- What is CVE-2023-50761?
- CVE-2023-50761 is a medium-severity vulnerability in Mozilla Thunderbird. CVSS score: 4.3/10. Published 2023-12-19.
- How severe is CVE-2023-50761?
- Medium severity. CVSS v3 base score is 4.3 out of 10.