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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2010:0237
The remote host is missing updates announced in
advisory RHSA-2010:0237.

Sendmail is a very widely used Mail Transport Agent (MTA). MTAs deliver
mail from one machine to another. Sendmail is not a client program, but
rather a behind-the-scenes daemon that moves email over networks or the
Internet to its final destination.

The configuration of sendmail in Red Hat Enterprise Linux was found to not
reject the localhost.localdomain domain name for email messages that come
from external hosts. This could allow remote attackers to disguise spoofed
messages. (CVE-2006-7176)

A flaw was found in the way sendmail handled NUL characters in the
CommonName field of X.509 certificates. An attacker able to get a
carefully-crafted certificate signed by a trusted Certificate Authority
could trick sendmail into accepting it by mistake, allowing the attacker to
perform a man-in-the-middle attack or bypass intended client certificate
authentication. (CVE-2009-4565)

Note: The CVE-2009-4565 issue only affected configurations using TLS with
certificate verification and CommonName checking enabled, which is not a
typical configuration.

All users of sendmail are advised to upgrade to these updated packages,
which resolve these issues.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2006-7176
BugTraq ID: 23742
Common Vulnerability Exposure (CVE) ID: CVE-2009-4565
BugTraq ID: 37543
Debian Security Information: DSA-1985 (Google Search)
HPdes Security Advisory: HPSBUX02508
HPdes Security Advisory: SSRT100007
SuSE Security Announcement: SUSE-SR:2010:006 (Google Search)
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