Scientific Linux Security Update : postfix on SL6.x i386/x86_64
Medium Nessus Plugin ID 61011
SynopsisThe remote Scientific Linux host is missing one or more security updates.
DescriptionIt was discovered that Postfix did not flush the received SMTP commands buffer after switching to TLS encryption for an SMTP session.
A man-in-the-middle attacker could use this flaw to inject SMTP commands into a victim's session during the plain text phase. This would lead to those commands being processed by Postfix after TLS encryption is enabled, possibly allowing the attacker to steal the victim's mail or authentication credentials. (CVE-2011-0411)
After installing this update, the postfix service will be restarted automatically.
SolutionUpdate the affected postfix and / or postfix-perl-scripts packages.