Debian Security Advisory DSA 3517-1 (exim4 - security update)

Published: 2016-03-13 23:00:00
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:L/AC:M/Au:N/C:C/I:C/A:C

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
exim4 on Debian Linux

Recommendations:
For the oldstable distribution (wheezy), this problem has been fixed in version 4.80-7+deb7u2. For the stable distribution (jessie), this problem has been fixed in version 4.84.2-1. For the testing distribution (stretch), this problem has been fixed in version 4.86.2-1. For the unstable distribution (sid), this problem has been fixed in version 4.86.2-1. We recommend that you upgrade your exim4 Linux Distribution Packages.

Summary:
A local root privilege escalation vulnerability was found in Exim, Debian's default mail transfer agent, in configurations using the perl_startup option (Only Exim via exim4-daemon-heavy enables Perl support). To address the vulnerability, updated Exim versions clean the complete execution environment by default, affecting Exim and subprocesses such as transports calling other programs, and thus may break existing installations. New configuration options (keep_environment, add_environment) were introduced to adjust this behavior.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2016-1531

References:

http://www.debian.org/security/2016/dsa-3517.html

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Severity
Medium
CVSS Score
6.9

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