Clam AntiVirus (ClamAV) and Kolab Server RAR file security bypass
| clamav-rar-security-bypass (34823) |  Medium Risk |
Description:
Clam AntiVirus (ClamAV) and Kolab Server could allow a remote attacker to bypass security restrictions, caused by a vulnerability in the parsing engine. By sending a specially-crafted RAR file to a vulnerable system, a remote attacker could bypass scanning detection and possibly execute arbitrary code on the system, once the file is processed.
Platforms Affected:
- Clam Anti-Virus, ClamAV 0.90.2 and prior
- Debian, Debian Linux 3.1
- Debian, Debian Linux 4.0
- Gentoo, Linux
- Kolab, Kolab Server 2.0.4 and prior
- Kolab, Kolab Server 2.1.0 and prior
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
Remedy:
For Clam AntiVirus:
Upgrade to the latest version of Clam AntiVirus (0.90.3 or later), available from the Clam AntiVirus Web site. See References.
For Kolab Server:
Upgrade to the latest version of Kolab Server (2.1.0 or later) and Clam AntiVirus (0.90.3 or later), available from the Clam AntiVirus and Kolab Server Web site. See References.
For Gentoo Linux (clamav):
Refer to GLSA 200706-05 for patch, upgrade, or suggested workaround information. See References.
For Debian/GNU Linux (clamav):
Refer to DSA-1320-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Bypass Security
References:
- Clam AntiVirus Web site, Clam AntiVirus at http://www.clamav.net/.
- ClamAV Bugzilla Bug 511, Vuln #2 | Class: AV Evasion | Format:RAR PoC Attached at https://wwws.clamav.net/bugzilla/show_bug.cgi?id=511.
- Clamav-announce Mailing List, 2007-05-30 18:49 -400, announcing ClamAV 0.90.3 at http://lurker.clamav.net/message/20070530.224918.5c64abc4.en.html.
- Kolab Security Issue 15 20070601, denial of service, insecure temporary files at http://kolab.org/security/kolab-vendor-notice-15.txt.
- Kolab Server Web site, Kolab Groupware:: Home at http://kolab.org/.
- CVE-2007-3122: The parsing engine in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows remote attackers to bypass scanning via a RAR file with a header flag value of 10, which can be processed by WinRAR.
- DSA-1320: clamav -- several vulnerabilities
- GLSA-200706-05: ClamAV: Multiple Denials of Service
- MDKSA-2007:115: Updated clamav packages fix vulnerabilities
- SA25525: Kolab Server ClamAV Denial of Service
Reported:
May 30, 2007
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. 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 author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.
For corrections or additions please email xforce@iss.net