RHEL 4 : exim (RHSA-2005:025)

high Nessus Plugin ID 17165

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated exim packages that resolve security issues are now available for Red Hat Enterprise Linux 4.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Exim is a mail transport agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.

A buffer overflow was discovered in the spa_base64_to_bits function in Exim, as originally obtained from Samba code. If SPA authentication is enabled, a remote attacker may be able to exploit this vulnerability to execute arbitrary code as the 'exim' user. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0022 to this issue. Please note that SPA authentication is not enabled by default in Red Hat Enterprise Linux 4.

Buffer overflow flaws were discovered in the host_aton and dns_build_reverse functions in Exim. A local user can trigger these flaws by executing exim with carefully crafted command line arguments and may be able to gain the privileges of the 'exim' account. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0021 to this issue.

Users of Exim are advised to update to these erratum packages which contain backported patches to correct these issues.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2005-0021

https://access.redhat.com/security/cve/cve-2005-0022

http://www.nessus.org/u?1855ef75

https://access.redhat.com/errata/RHSA-2005:025

Plugin Details

Severity: High

ID: 17165

File Name: redhat-RHSA-2005-025.nasl

Version: 1.23

Type: local

Agent: unix

Published: 2/22/2005

Updated: 1/14/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:exim, p-cpe:/a:redhat:enterprise_linux:exim-doc, p-cpe:/a:redhat:enterprise_linux:exim-mon, p-cpe:/a:redhat:enterprise_linux:exim-sa, cpe:/o:redhat:enterprise_linux:4

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

Patch Publication Date: 2/15/2005

Vulnerability Publication Date: 5/2/2005

Reference Information

CVE: CVE-2005-0021, CVE-2005-0022

RHSA: 2005:025