Date:         Wed, 7 Apr 2010 13:29:51 -0500
Reply-To:     Troy Dawson 
Sender:       Security Errata for Scientific Linux
              
From:         Troy Dawson 
Subject:      Security ERRATA Low: sendmail on SL5.x i386/x86_64
Comments: To: "scientific-linux-errata@fnal.gov"
          

Synopsis:	Low: sendmail security and bug fix update
Issue date:	2010-03-30
CVE Names:	CVE-2006-7176 CVE-2009-4565

The configuration of sendmail in Scientific 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.

This update also fixes the following bugs:

* sendmail was unable to parse files specified by the ServiceSwitchFile
option which used a colon as a separator. (BZ#512871)

* sendmail incorrectly returned a zero exit code when free space was 
low. (BZ#299951)

* the sendmail manual page had a blank space between the -qG option and
parameter. (BZ#250552)

* the comments in the sendmail.mc file specified the wrong path to SSL
certificates. (BZ#244012)

* the sendmail packages did not provide the MTA capability. (BZ#494408)

SL 5.x

     SRPMS:
sendmail-8.13.8-8.el5.src.rpm
     i386:
sendmail-8.13.8-8.el5.i386.rpm
sendmail-cf-8.13.8-8.el5.i386.rpm
sendmail-devel-8.13.8-8.el5.i386.rpm
sendmail-doc-8.13.8-8.el5.i386.rpm
     x86_64:
sendmail-8.13.8-8.el5.x86_64.rpm
sendmail-cf-8.13.8-8.el5.x86_64.rpm
sendmail-devel-8.13.8-8.el5.i386.rpm
sendmail-devel-8.13.8-8.el5.x86_64.rpm
sendmail-doc-8.13.8-8.el5.x86_64.rpm

-Connie Sieh
-Troy Dawson