SB2019021114 - Improper Verification of Cryptographic Signature in enigmail.mozdev Enigmail
Published: February 11, 2019 Updated: July 17, 2020
Security Bulletin ID
SB2019021114
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2018-15586)
The vulnerability allows a remote non-authenticated attacker to manipulate data.
Enigmail before 2.0.6 is prone to to OpenPGP signatures being spoofed for arbitrary messages using a PGP/INLINE signature wrapped within a specially crafted multipart HTML email.
Remediation
Install update from vendor's website.
References
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
- http://seclists.org/fulldisclosure/2019/Apr/38
- http://www.openwall.com/lists/oss-security/2019/04/30/4
- https://github.com/RUB-NDS/Johnny-You-Are-Fired
- https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
- https://sourceforge.net/p/enigmail/bugs/849/