Package : courier Vulnerability : programming error Problem-Type : remote Debian-specific: no CVE ID : CAN-2005-2151 Debian Bug : 320290
A problem has been discovered in the Courier Mail Server. DNS failures were not handled properly when looking up Sender Policy Framework (SPF) records, which could allow attackers to cause memory corruption. The default configuration on Debian has SPF checking disabled, so most machines are not vulnerable. This is explained in the "courier" manpage, section SENDER POLICY FRAMEWORK KEYWORDS.
The old stable distribution (woody) is not affected by this problem.
For the stable distribution (sarge) this problem has been fixed in version 0.47-4sarge1.
For the unstable distribution (sid) this problem has been fixed in version 0.47-6.
We recommend that you upgrade your courier-mta package.
Upgrade Instructions --------------------
wget url will fetch the file for you dpkg -i file.deb will install the referenced file.
If you are using the apt-get package manager, use the line for sources.list as given below:
apt-get update will update the internal database apt-get upgrade will install corrected packages
You may use an automated update by adding the resources from the footer to the proper configuration.
Debian GNU/Linux 3.1 alias sarge --------------------------------