CA products that utilize the Arclib library contain two denial of service vulnerabilities. The first vulnerability is due to an application hang when processing a specially malformed CHM file. The second vulnerability is due to an application hang when processing a specially malformed RAR file.
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iDefense Security Advisory 07.24.07 - Remote exploitation of a denial of Service (DoS) vulnerability in Computer Associates Inc.'s eTrust Antivirus products could allow attackers to create a DoS condition on the affected computer. When eTrust Antivirus engine scans a malformed CHM file that has an invalid 'previous listing chunk number' field, the scanner will enter an infinite loop and be unable to process any other files. iDefense has confirmed this vulnerability in eTrust AntiVirus version r8. Previous versions of eTrust Antivirus are suspected vulnerable. Other Computer Associates products, as well as derived products, may also be vulnerable.
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