Debian Security Advisory
DSA-2566-1 exim4 -- heap-based buffer overflow
- Date Reported:
- 25 Oct 2012
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2012-5671.
- More information:
It was discovered that Exim, a mail transport agent, is not properly handling the decoding of DNS records for DKIM. Specifically, crafted records can yield to a heap-based buffer overflow. An attacker can exploit this flaw to execute arbitrary code.
For the stable distribution (squeeze), this problem has been fixed in version 4.72-6+squeeze3.
For the testing distribution (wheezy), this problem has been fixed in version 4.80-5.1.
For the unstable distribution (sid), this problem has been fixed in version 4.80-5.1.
We recommend that you upgrade your exim4 packages.