msmtp: X.509 NULL spoofing vulnerability — GLSA 201206-34

An error in the hostname matching in msmtp might enable remote attackers to conduct man-in-the-middle attacks.

Affected Packages

mail-mta/msmtp on all architectures
Affected versions < 1.4.19
Unaffected versions >= 1.4.19

Background

msmtp is an SMTP client and SMTP plugin for mail user agents such as Mutt.

Description

A vulnerability have been discovered in msmtp. Please review the CVE identifier referenced below for details.

Impact

A remote attacker might employ a specially crafted certificate to conduct man-in-the-middle attacks on SSL connections made using msmtp.

Workaround

There is no known workaround at this time.

Resolution

All msmtp users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=mail-mta/msmtp-1.4.19"
 

References

Release Date
June 25, 2012

Latest Revision
June 25, 2012: 1

Severity
normal

Exploitable
remote

Bugzilla entries