Clam AntiVirus libclamav/upx.c buffer overflow

clamav-libclamav-upx-bo (24047) The risk level is classified as HighHigh Risk

Description:

Clam AntiVirus is vulnerable to a heap-based buffer overflow in libclamav/upx.c. By creating a malicious UPX file, and sending it to a vulnerable system as an email attachment, a remote attacker could overflow a buffer and execute arbitrary code or cause the affected application to crash, once the malicious file is processed.

*CVSS:

Base Score: 8
  Access Vector: Remote
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 5.9
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Clam AntiVirus (0.88 or later), available from SourceForge.net. See References.

For Debian GNU/Linux:
Refer to DSA-947-1 for patch, upgrade, or suggested workaround information. See References.

For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2006-01-07 and GLSA 2005-11-04 for patch, upgrade, or suggested workaround information. See References.

References:

  • SourceForge.net: Clam AntiVirus: Latest File Releases.
  • SourceForge.net: Files: Clam AntiVirus Release Name: 0.88.
  • ZDI-06-001: Clam AntiVirus UPX Unpacking Code Execution.
  • BID-16191: Clam Anti-Virus ClamAV UPX Compressed File Heap Buffer Overflow Vulnerability
  • CVE-2005-3587: Improper boundary checks in petite.c in Clam AntiVirus (ClamAV) before 0.87.1 allows attackers to perform unknown attacks via unknown vectors.
  • CVE-2006-0162: Heap-based buffer overflow in libclamav/upx.c in Clam Antivirus (ClamAV) before 0.88 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted UPX files.
  • DSA-947: clamav -- heap overflow
  • GLSA-200511-04: ClamAV: Multiple vulnerabilities
  • GLSA-200601-07: ClamAV: Remote execution of arbitrary code
  • MDKSA-2005:205: Updated clamav packages fix multiple vulnerabilities
  • MDKSA-2006:016: Updated clamav packages fix vulnerability
  • OSVDB ID: 22318: Clam AntiVirus UPX File Processing Overflow
  • OSVDB ID: 31296: Clam AntiVirus petite.c Unspecified Overflow
  • SA18379: ClamAV UPX File Handling Buffer Overflow Vulnerability
  • SECTRACK ID: 1015457: Clam AntiVirus pefromupx() Buffer Overflow Has Unspecified Impact
  • SUSE-SR:2006:001: SUSE Security Summary Report
  • US-CERT VU#385908: Clam AntiVirus vulnerable to memory corruption via specially crafted UPX packed file

Platforms Affected:

  • ClamAV ClamAV prior to 0.88
  • Debian Debian Linux 3.1
  • Gentoo Linux
  • MandrakeSoft Mandrake Linux 10.1
  • MandrakeSoft Mandrake Linux 10.1 X86_64
  • MandrakeSoft Mandrake Linux 2006
  • MandrakeSoft Mandrake Linux 2006 X86_64
  • MandrakeSoft Mandrake Linux LE2005 X86_64
  • MandrakeSoft Mandrake Linux LE2005
  • MandrakeSoft Mandrake Linux Corporate Server 3.0
  • MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64

Reported:

Jan 09, 2006

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