Description: Some vulnerabilities have been reported in ClamAV, which can be exploited by malicious people to cause a DoS (Denial of Service).
1) An error exists within the OLE2 parser when handling objects with malformed FAT partitions and large property sizes. This can be exploited to cause a DoS due to storage and CPU resource consumption by scanning a specially crafted OLE2 file.
2) An error in the processing of RAR files can be exploited to crash the process via a specially crafted RAR file.
3) A boundary error exists within the file /libclamav/unsp.c, which can be exploited to crash the process via a specially crafted NsPacked file.
4) An incorrect regular expression in libclamav/phishcheck.c can be exploited to cause a DoS by consuming all available CPU resources via a specially crafted file.
Successful exploitation may depend upon the regular expression implementation used.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.
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Ideas, suggestions, and other feedback are most welcome.
