CVE-2018-18509
- State
- Published
- Severity
- Not scored
- Published
- Apr 26, 2019
- Updated
- Aug 5, 2024
- Reserved
- Oct 19, 2018
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
ThunderbirdMozilla |
|
References
- openSUSE-SU-2019:1162vendor-advisory
- https://www.mozilla.org/security/advisories/mfsa2019-06/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1507218
- [oss-security] 20190430 Spoofing OpenPGP and S/MIME Signatures in Emails (multiple clients)mailing-list
- 20190430 OpenPGP and S/MIME signature forgery attacks in multiple email clientsmailing-list
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
- RHSA-2019:1144vendor-advisory
- https://github.com/RUB-NDS/Johnny-You-Are-Fired
- https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
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