Clam AntiVirus and Kolab Server RAR denial of service

clamav-rar-dos (34778) The risk level is classified as LowLow Risk

Description:

Clam AntiVirus (ClamAV) and Kolab Server are vulnerable to a denial of service. By creating a specially-crafted RAR file, a remote attacker could exploit this vulnerability to cause a denial of service, if the attacker could persuade the victim to scan the malicious file.

*CVSS:

Base Score: 2.8
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 2.1
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

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.

References:

  • Clam AntiVirus Web site: Clam AntiVirus.
  • Kolab Security Issue 15 20070601: denial of service, insecure temporary files.
  • Kolab Server Web site: Kolab Groupware:: Home.
  • BID-24289: Clam AntiVirus ClamAV RAR Handling Remote Denial Of Service Vulnerability
  • CVE-2007-3123: unrar.c in libclamav in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows remote attackers to cause a denial of service (core dump) via a crafted RAR file with a modified vm_codesize value, which triggers a heap-based buffer overflow.
  • 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

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
  • Kolab Kolab Server 2.1.0
  • MandrakeSoft Mandrake Linux 2007 X86_64
  • MandrakeSoft Mandrake Linux 2007
  • 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

Reported:

May 30, 2007

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For corrections or additions please email xforce@iss.net

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