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Ubuntu Security Notice: USN-2016-1234-1 Exim Privilege Escalation Risk

Calendar Mar 10, 2016 • User Avatar LinuxSecurity Advisories
1 min read
Archlinux Large Esm H446
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Topics Covered

security advisory high severity privilege escalation exim Arch Linux
The package exim before version 4.86.2-2 is vulnerable to privilege escalation. 
Arch Linux Security Advisory ASA-201603-8
========================================
Severity: High
Date    : 2016-03-10
CVE-ID  : CVE-2016-1531
Package : exim
Type    : privilege escalation
Remote  : No
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package exim before version 4.86.2-2 is vulnerable to privilege
escalation.

Resolution
=========
Upgrade to 4.86.2-2.

# pacman -Syu "exim>=4.86.2-2"

The problem has been fixed upstream in version 4.86.2.

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

Description
==========
All installations having Exim set-uid root and using 'perl_startup' are
vulnerable to a local privilege escalation. Any user who can start an
instance of Exim (and this is normally *any* user) can gain root
privileges.

Impact
=====
A local attacker is able to use a privilege escalation vulnerability to
gain root privileges.

References
=========
https://www.exim.org/static/doc/CVE-2016-1531.txt
https://access.redhat.com/security/cve/CVE-2016-1531