FrSIRT - Clam AntiVirus OLE2 Unpacker Remote Denial of Service Vulnerability / Exploit (Security Advisories)

French Security Incident Response Team

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Clam AntiVirus OLE2 Unpacker Remote Denial of Service Vulnerability

Title : Clam AntiVirus OLE2 Unpacker Remote Denial of Service Vulnerability
Advisory ID : FrSIRT/ADV-2005-2080
CVE ID : CVE-2005-3239
Rated as : Low Risk

Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2005-10-13

Advisory Details

Description

Affected Products

Solution

References

Technical Description

A vulnerability has been identified in Clam AntiVirus (ClamAV), which may be exploited by remote attackers to cause a denial of service. This issue is due to an error in the "ole2_walk_property_tree()" function when processing specially crafted ".doc" documents, which could be exploited by remote attackers to cause a denial of service (DoS). This issue exists when the "ArchiveMaxFiles" option is configured with a large value.

Credits

Vulnerability reported by Marcin Owsiany

ChangeLog

2005-10-13 : Initial release
2005-11-05 : Updated Solution

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