Clam AntiVirus cab_unstore() and cab_extract() buffer overflow
| clamav-cabunstore-cabextract-bo (33637) |  High Risk |
Description:
Clam AntiVirus (ClavAV) is vulnerable to a buffer overflow, caused by improper bounds checking by the cab_unstore() and cab_extract() functions. By sending a specially-crafted CAB file, a remote attacker could overflow a buffer and possibly execute arbitrary code on the system or cause the application to crash.
Platforms Affected:
- Apple, Mac OS X Server 10.4.11
- Clam Anti-Virus, ClamAV 0.90.1 and prior
- Debian, Debian Linux 3.1
- Debian, Debian Linux 4.0
- Gentoo, Linux
- Mandriva, Corporate Server 3.0
- Mandriva, Corporate Server 3.0 X86_64
- Mandriva, Corporate Server 4.0
- Mandriva, Corporate Server 4.0 X86_64
- Mandriva, Linux 2007
- Mandriva, Linux 2007 X86_64
- Mandriva, Linux 2007.1
- Mandriva, Linux 2007.1 X86_64
- Mandriva, Linux 2008.0 X86_64
- Novell, Linux POS 9
- Novell, Open Enterprise Server
- Novell, Open Enterprise Server
- Novell, OpenSUSE 10.2
- SuSE, SuSE Linux 9.3
- SuSE, SuSE SLES 10
- SuSE, SuSE SLES 9
Remedy:
Upgrade to the latest version of Clam AntiVirus (0.90.2 or later), available from SourceForge.net: Files. See References.
For Debian GNU/Linux:
Refer to DSA-629-1 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to GLSA 200704-21 for patch, upgrade, or suggested workaround information. See References.
For Debian Linux (clamav):
Refer to DSA-1281-1 for patch, upgrade, or suggested workaround information. See References.
For Mandriva Linux (clamav):
Refer to MDKSA-2007:098 for patch, upgrade, or suggested workaround information. See References.
For Mac OS X:
Apply Security Update 2008-002, available from the Apple Web site. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Gain Access
References:
- Apple Web site, About Security Update 2008-002 at http://docs.info.apple.com/article.html?artnum=307562.
- iDefense Security Advisory 04.16.07, ClamAV CAB File Unstore Buffer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=513.
- SourceForge.net: Files, Clam AntiVirus - File Release Notes and Changelog - Release Name: 0.90.2 at http://sourceforge.net/project/shownotes.php?release_id=500765&group_id=86638.
- BID-23473: ClamAV Multiple Remote Vulnerabilities
- CVE-2007-1997: Integer signedness error in the (1) cab_unstore and (2) cab_extract functions in libclamav/cab.c in Clam AntiVirus (ClamAV) before 0.90.2 allow remote attackers to execute arbitrary code via a crafted CHM file that contains a negative integer, which passes a signed comparison and leads to a stack-based buffer overflow.
- DSA-1281: clamav -- several vulnerabilities
- FrSIRT/ADV-2007-1378: Clam AntiVirus (ClamAV) cab_unstore() and chm_decompress_stream() Vulnerabilities
- FrSIRT/ADV-2008-0924: Apple Mac OS X Command Execution and Security Bypass Issues
- GLSA-200704-21: ClamAV: Multiple vulnerabilities
- MDKSA-2007:098: Updated clamav packages fix vulnerabilities
- SA24891: Clam AntiVirus Multiple Vulnerabilities
- SA29420: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1017921: Clam AntiVirus Buffer Overflow in cab_unstore() Lets Remote Users Execute Arbitrary Code
- SUSE-SA:2007:026: clamav 0.90.2 security update
Reported:
Apr 12, 2007
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