cve/2018/CVE-2018-18509.md

CVE-2018-18509

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.

POC

Reference

• http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
• http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html

Github

No PoCs found on GitHub currently.