20483 : Clam AntiVirus tnef.c tnef_attachment Function Infinite Loop DoS
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Info

Last Modified

10 months ago

Percent Complete

90%

Disclosure

Nov 04, 2005

Discovery

Oct 07, 2005

Dates

Exploit

Unknown

Solution

Unknown

Description

Clam AntiVirus contains a flaw that may allow a remote denial of service. The issue is triggered due to a design error of the 'tnef_attachment()' function in 'tnef.c', which uses an user controlled value of the 'fseek()' function to move the file pointer to a specific byte in a file. With a specially crafted CAB file, a remote attacker can cause the application to enter an infinite loop resulting in a loss of availability.

Classification

Location: Remote/Network Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Solution

Upgrade to version 0.87.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Tomasz Kojm

Clam AntiVirus

0.86.1

References

Secunia Advisory ID: 17434 17501 17559
CVE ID: 2005-3500 (see also: NVD)
Related OSVDB ID: 20482 20484
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2005-11/0125.html
Vendor Specific Advisory URL: http://frontal2.mandriva.com/security/advisories?name=MDKSA-2005:205
http://www.debian.org/security/2005/dsa-887
http://www.novell.com/linux/security/advisories/2005_26_sr.html
Vendor Specific News/Changelog Entry: http://sourceforge.net/project/shownotes.php?release_id=368319
Vendor URL: http://www.clamav.net/
Other Advisory URL: http://www.idefense.com/application/poi/display?id=333&type=vulnerabilities

Tools & Filters

Nessus	20439 22753

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Unknown or Incomplete

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