20482 : Clam AntiVirus libclamav/fsg.c FSG File Processing Overflow
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
3	297	over 4 years ago	7 days ago	1 times	90%

Timeline

Vendor Informed Date	Disclosure Date
2005-10-24	2005-11-04

Keywords

ZDI-05-002

Description

A remote overflow exists in Clam AntiVirus. The 'unfsg_133()' function in 'libclamav/fsg.c' fails to perform proper bounds checking resulting in a heap-based buffer overflow. With a specially crafted file compressed with FSG v1.33, a remote attacker can cause arbitrary code execution resulting in a loss of integrity.

Classification

Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Private
Disclosure: OSVDB Verified

Technical

ZDI has released a working exploit to their paying customers.

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	0.87
		0.86.x
		0.85.x
		0.84.x
		0.83
		0.82
		0.81.x
		0.80

References

Security Tracker: 1015154
Secunia Advisory ID: 17434 17448 17501 17559
CVE ID: 2005-3303 (see also: NVD)
Related OSVDB ID: 20483 20484
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2005-11/0122.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.gentoo.org/security/en/glsa/glsa-200511-04.xml
http://www.zerodayinitiative.com/advisories/ZDI-05-002.html
Keyword: ZDI-05-002

Tools & Filters

	20439 22753
	3281

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2005-11-07 | 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

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