[ GLSA 201906-01 ] Exim

[GLSA]

Gentoo Linux Security Advisory

Title: Exim: Remote command execution (GLSA 201906-01)
Severity: high
Exploitable: remote
Date: 2019-06-06
Bug(s): #687336
ID: 201906-01

Synopsis

A vulnerability in Exim could allow a remote attacker to execute
arbitrary commands.


Background

Exim is a message transfer agent (MTA) designed to be a a highly
configurable, drop-in replacement for sendmail.


Affected Packages

Package: mail-mta/exim
Vulnerable: < 4.92
Unaffected: >= 4.92
Architectures: All supported architectures


Description

A vulnerability was discovered in how Exim validates recipient addresses
in the deliver_message() function.


Impact

A remote attacker could execute arbitrary commands by sending an email
with a specially crafted recipient address to the affected system.


Workaround

There is no known workaround at this time.

Resolution

All Exim users should upgrade to the latest version: