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Arch Linux: 201902-22 High: msmtp Certificate Bypass Issue

Calendar Feb 25, 2019 • User Avatar LinuxSecurity Advisories
1 min read
Archlinux Large Esm H446
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Topics Covered

security advisory high severity remote threat certificate issue Arch Linux msmtp
The package msmtp before version 1.8.3-1 is vulnerable to certificate verification bypass. 
Arch Linux Security Advisory ASA-201902-22
=========================================
Severity: High
Date    : 2019-02-17
CVE-ID  : CVE-2019-8337
Package : msmtp
Type    : certificate verification bypass
Remote  : Yes
Link    : https://security.archlinux.org/AVG-905

Summary
======
The package msmtp before version 1.8.3-1 is vulnerable to certificate
verification bypass.

Resolution
=========
Upgrade to 1.8.3-1.

# pacman -Syu "msmtp>=1.8.3-1"

The problem has been fixed upstream in version 1.8.3.

Workaround
=========
None.

Description
==========
In msmtp 1.8.2, when tls_trust_file has its default configuration,
certificate-verification results are not properly checked.

Impact
=====
The default configuration would omit certification verification.

References
=========
https://marlam.de/msmtp/news/
https://security.archlinux.org/CVE-2019-8337