Clam AntiVirus pefromupx() buffer overflow
| clamav-pefromupx-bo (28286) |  High Risk |
Description:
Clam AntiVirus is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the pefromupx() function in libclamav/upx.c. By sending a specially-crafted compressed UPX file in an email, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the service to crash.
*CVSS:
| Base Score: | 10 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Complete |
| Integrity Impact: | Complete |
| Availability Impact: | Complete |
| Temporal Score: | 7.8 |
| Exploitability: | Proof-Of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of Clam AntiVirus (0.88.4 or later), available from SourceForge.net. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200608-13 for patch, upgrade, or suggested workaround information. See References.
For Debian GNU/Linux:
Refer to DSA-1153-1 for patch, upgrade, or suggested workaround information. See References.
For SUSE Linux:
Refer to SUSE-SA:2006:046 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Overflow.pl Security Advisory #6: Clam AntiVirus Win32-UPX Heap Overflow.
- SourceForge.net: Files: Clam AntiVirus.
- BID-19381: Clam Anti-Virus ClamAV UPX Compressed PE File Heap Buffer Overflow Vulnerability
- CVE-2006-4018: Heap-based buffer overflow in the pefromupx function in libclamav/upx.c in Clam AntiVirus (ClamAV) 0.81 through 0.88.3 allows remote attackers to execute arbitrary code via a crafted UPX packed file containing sections with large rsize values.
- DSA-1153: clamav -- buffer overflow
- GLSA-200608-13: ClamAV: Heap buffer overflow
- MDKSA-2006:138: Updated clamav packages fix vulnerability
- SA21374: Clam AntiVirus pefromupx() Buffer Overflow Vulnerability
- SA21497: Kolab Server ClamAV Buffer Overflow Vulnerability
- SECTRACK ID: 1016645: Clam AntiVirus Heap Overflow in pefromupx() in Processing UPX Files Lets Remote Users Execute Arbitrary Code
- SUSE-SA:2006:046: clamav security problem
- VUPEN/ADV-2006-3175: Clam AntiVirus pefromupx() Function UPX File Handling Remote Buffer Overflow Vulnerability
- VUPEN/ADV-2006-3275: Kolab Server Security Update Fixes Clamav pefromupx() Buffer Overflow Vulnerability
Platforms Affected:
- Clam Anti-Virus ClamAV 0.8.8.2
- Clam Anti-Virus ClamAV 0.8.8.3
- Debian Debian Linux 3.1
- Gentoo Linux
- MandrakeSoft Mandrake Linux 2006 X86_64
- MandrakeSoft Mandrake Linux 2006
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- SUSE SuSE Linux 10.0
- SUSE SuSE Linux 10.1
- SUSE SuSE Linux 9.2
- SUSE SuSE Linux 9.3
- SuSE SuSE SLES 10
- SuSE SuSE SLES 9
Reported:
Aug 07, 2006
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 (IBM 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.
For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.