Debian Security Advisory

DLA-1274-1 exim4 -- LTS security update

Date Reported:
10 Feb 2018
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 890000.
In Mitre's CVE dictionary: CVE-2018-6789.
More information:

Meh Chang discovered a buffer overflow flaw in a utility function used in the SMTP listener of Exim, a mail transport agent. A remote attacker can take advantage of this flaw to cause a denial of service, or potentially the execution of arbitrary code via a specially crafted message.

For Debian 7 Wheezy, this problem has been fixed in version 4.80-7+deb7u6.

We recommend that you upgrade your exim4 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: