Debian DSA-3517-1 : exim4 - security update

Medium Nessus Plugin ID 89926

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VPR Score: 7.4

Synopsis

The remote Debian host is missing a security-related update.

Description

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.

More information can be found in the upstream advisory at https://www.exim.org/static/doc/CVE-2016-1531.txt

Solution

Upgrade the exim4 packages.

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.

See Also

https://www.exim.org/static/doc/CVE-2016-1531.txt

https://packages.debian.org/source/wheezy/exim4

https://packages.debian.org/source/jessie/exim4

https://www.debian.org/security/2016/dsa-3517

Plugin Details

Severity: Medium

ID: 89926

File Name: debian_DSA-3517.nasl

Version: 2.12

Type: local

Agent: unix

Published: 2016/03/15

Updated: 2020/09/23

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 7.4

CVSS v2.0

Base Score: 6.9

Temporal Score: 5.7

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 7

Temporal Score: 6.5

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:exim4, cpe:/o:debian:debian_linux:7.0, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/03/14

Exploitable With

Core Impact

Reference Information

CVE: CVE-2016-1531

DSA: 3517