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>> Clam AntiVirus Malformed FSG/TNEF/CAB File Handling Vulnerabilities

Title : Clam AntiVirus Malformed FSG/TNEF/CAB File Handling Vulnerabilities
VUPEN ID : VUPEN/ADV-2005-2294
CVE ID : CVE-2005-3303 - CVE-2005-3500 - CVE-2005-3501
CWE ID : VUPEN VNS Only
CVSS V2 : VUPEN VNS Only
Rated as : Critical 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2005-11-04


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

Multiple vulnerabilities were identified in Clam AntiVirus, which could be exploited by remote attackers to execute arbitrary commands or cause a denial of service.

The first issue is due to a buffer overflow error in "libclamav/fsg.c" when unpacking malformed FSG files, which could be exploited by remote attackers to execute arbitrary commands via a specially crafted file.

The second vulnerability is due to an infinite loop in "libclamav/tnef.c" when processing malformed TNEF files, which could be exploited by remote attackers to cause a denial of service.

The third flaw is due to an infinite loop in "libclamav/mspack/cabd.c" when processing malformed CAB files, which could be exploited by remote attackers to cause a denial of service.

Affected Products

Clam AntiVirus (ClamAV) version 0.87 and prior

Solution

Upgrade to Clam AntiVirus (ClamAV) version 0.87.1 :
http://sourceforge.net/project/showfiles.php?group_id=86638

References

http://www.vupen.com/english/advisories/2005/2294
http://sourceforge.net/project/shownotes.php?release_id=368319
http://www.zerodayinitiative.com/advisories/ZDI-05-002.html

Credits

Vulnerabilities reported by Zero Day Initiative and iDEFENSE

ChangeLog

2005-11-04 : Initial release
2005-11-04 : Upgraded References and Criticality

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