[ GLSA 202105-01 ] Exim

[GLSA]

Gentoo Linux Security Advisory

Title: Exim: Multiple vulnerabilities (GLSA 202105-01)
Severity: high
Exploitable: local, remote
Date: 2021-05-04
Bug(s): #786945
ID: 202105-01

Synopsis

Multiple vulnerabilities have been found in Exim, the worst of
which allows remote attackers to execute arbitrary code.


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: < 4.94.2
Unaffected: >= 4.94.2
Architectures: All supported architectures


Description

Multiple vulnerabilities have been discovered in Exim. Please review the
CVE identifiers referenced below for details.


Impact

A remote attacker, by connecting to the SMTP listener daemon, could
possibly execute arbitrary code with the privileges of the process or
cause a Denial of Service condition. Furthermore, a local attacker could
perform symlink attacks to overwrite arbitrary files with the privileges
of the user running the application or escalate privileges.


Workaround

There is no known workaround at this time.

Resolution

All Exim users should upgrade to the latest version: