RHEL 4 : exim (RHSA-2005:025)

This script is Copyright (C) 2005-2014 Tenable Network Security, Inc.


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.

See also :

https://www.redhat.com/security/data/cve/CVE-2005-0021.html
https://www.redhat.com/security/data/cve/CVE-2005-0022.html
http://www.nessus.org/u?1855ef75
http://rhn.redhat.com/errata/RHSA-2005-025.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: Red Hat Local Security Checks

Nessus Plugin ID: 17165 ()

Bugtraq ID:

CVE ID: CVE-2005-0021
CVE-2005-0022