Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Check for the version of the sendmail packages
Detailed Explanation for this Vulnerability Assessment
Updated Sendmail packages are available to fix a vulnerability that
may permit remote attackers to gain root rights by sending a
carefully crafted message.
[Updated March 18 2003]
Added packages for Red Hat Enterprise Linux ES and Red Hat Enterprise Linux
Sendmail is a widely used Mail Transport Agent (MTA) which is included
in all Red Hat Enterprise Linux distributions.
During a code audit of Sendmail by ISS, a critical vulnerability was
uncovered that affects unpatched versions of Sendmail prior to version
8.12.8. A remote attacker can send a carefully crafted email message
which, when processed by sendmail, causes arbitrary code to be
executed as root.
We are advised that a proof-of-concept exploit is known to exist, but
is not believed to be in the wild.
Since this is a message-based vulnerability, MTAs other than Sendmail
may pass on the carefully crafted message. This means that unpatched
versions of Sendmail inside a network could still be at risk even if
they do not accept external connections directly.
All users are advised to update to these erratum packages which contain
a backported patch to correct this vulnerability.
Red Hat would like to thank Eric Allman for his assistance with this
Solution : http://rhn.redhat.com/errata/RHSA-2003-074.html
Network Security Threat Level: High
Networks Security ID:
Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security
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