Mandriva Linux Security Advisory MDKSA-2006:230: The latest version of ClamAV, 0.88.7, fixes some bugs, including vulnerabilities with handling base64-encoded MIME attachment files that can lead to either a) a crash (CVE-2006-5874), or b) a bypass of virus detection (CVE-2006-6406).
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/53023/MDKSA-2006-230.txt
Source: https://packetstormsecurity.com/files/53023/Mandriva-Linux-Security-Advisory-2006.230.html