An Apache2 securuty update has been released for Debian 6 LTS

Package : apache2
Version : 2.2.16-6+squeeze13
CVE ID : CVE-2013-6438 CVE-2014-0118 CVE-2014-0226 CVE-2014-0231

CVE-2014-0231: prevent denial of service in mod_cgid.
CVE-2014-0226: prevent denial of service via race in mod_status.
CVE-2014-0118: fix resource consumption via mod_deflate body decompression.
CVE-2013-6438: prevent denial of service via mod_dav incorrect end of string