17645 : Clam AntiVirus Zero Length Cabinet File ENSURE_BITS() Macro DoS
Printer | http://osvdb.org/17645 | Email This | Edit Vulnerability

Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
8	331	over 6 years ago	about 1 year ago	1 times	100%

Timeline

Discovery Date	Vendor Informed Date	Disclosure Date	Vendor Ack Date
2005-06-07	2005-06-07	2005-06-29	2006-06-08

Time to Vendor Response
366 days

Description

ClamAV contains a flaw that may allow a remote denial of service. The issue is triggered when the ENSURE_BITS() function in the libclamav/mspack/mszipd.c fails to properly validate user supplied input. A remote attacker could send a specially crafted CAB file with a cffile_FolderOffset set to 0xff to cause the program to enter an infinite loop, resulting in a loss of availability of the anti-virus system.

Classification

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

Solution

Upgrade to version 0.86 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Tomasz Kojm

ClamAV

0.83

References

Security Tracker: 1014332
Bugtraq ID: 14089
Secunia Advisory ID: 15859 15919 15938 16413
Related OSVDB ID: 17646
CVE ID: 2005-1923 (see also: NVD)
ISS X-Force ID: 21204
VUPEN Advisory: ADV-2005-0922
Mail List Post: http://archives.neohapsis.com/archives/vulnwatch/2005-q2/0082.html
Vendor URL: http://clamav.sourceforge.net/
Other Advisory URL: http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000973
http://www.debian.org/security/2005/dsa-737
http://www.debian.org/security/2005/dsa-773
http://www.idefense.com/application/poi/display?id=275&type=vulnerabilities

Tools & Filters

	18629 19139
	3033

Credit

Anonymous - iDefense Labs VCP

CVSSv2 Score

CVSSv2 Base Score = 2.6
Source: nvd.nist.gov | Generated: 2005-07-05 | Disagree?

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

None found at this time

Comments

Add Comment Hide Add Comment

No Comments.

The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.