Scientific Linux Security Update : exim on SL4.x, SL5.x i386/x86_64

Medium Nessus Plugin ID 60936

New! Vulnerability Priority Rating (VPR)

Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.

VPR Score: 7.4

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

A privilege escalation flaw was discovered in Exim. If an attacker were able to gain access to the 'exim' user, they could cause Exim to execute arbitrary commands as the root user. (CVE-2010-4345)

This update adds a new configuration file, '/etc/exim/trusted-configs'. To prevent Exim from running arbitrary commands as root, Exim will now drop privileges when run with a configuration file not listed as trusted. This could break backwards compatibility with some Exim configurations, as the trusted-configs file only trusts '/etc/exim/exim.conf' and '/etc/exim/exim4.conf' by default. If you are using a configuration file not listed in the new trusted-configs file, you will need to add it manually.

Additionally, Exim will no longer allow a user to execute exim as root with the -D command line option to override macro definitions. All macro definitions that require root permissions must now reside in a trusted configuration file.

After installing this update, the exim daemon will be restarted automatically.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?5df76c47

Plugin Details

Severity: Medium

ID: 60936

File Name: sl_20110117_exim_on_SL4_x.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2012/08/01

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 7.4

CVSS v2.0

Base Score: 6.9

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2011/01/17

Exploitable With

Metasploit (Exim4 string_format Function Heap Buffer Overflow)

Reference Information

CVE: CVE-2010-4345