avast! antivirus CAB file buffer overflow
| avast-cab-bo (34477) |  High Risk |
Description:
avast! antivirus is vulnerable to a heap-based buffer overflow, caused by improper bounds checking when parsing CAB files. By creating a specially-crafted CAB file, a remote attacker could overflow a buffer and execute arbitrary code on the system, if the attacker could persuade the victim to unpack the malicious file.
Platforms Affected:
- Alwil, avast! prior to 4.7.700
Remedy:
Upgrade to the latest version of avast! antivirus (4.7.700 or later), available from the avast! antivirus Web site. See References.
Consequences:
Gain Access
References:
- avast! antivirus Web site, avast! antivirus software - computer virus, worm and Trojan protection by ALWIL Software at http://www.avast.com/index.html.
- Full-Disclosure Mailing List, Thu May 24 2007 - 05:38:28 CDT, n.runs-SA-2007.008 - Avast! Antivirus CAB parsing Arbitrary Code Execution Advisory at http://archives.neohapsis.com/archives/fulldisclosure/2007-05/0448.html.
- BID-24132: Avast! Managed Client CAB File Handling Remote Heap Overflow Vulnerability
- CVE-2007-2845: Heap-based buffer overflow in the CAB unpacker in avast! Anti-Virus Managed Client before 4.7.700 allows user-assisted remote attackers to execute arbitrary code via a crafted CAB archive, resulting from an integer cast around.
- SA25380: avast! CAB and SIS File Processing Buffer Overflows
- SECTRACK ID: 1018108: avast! Buffer Overflow in Processing `.cab` Files Lets Remote Users Execute Arbitrary Code
- VUPEN/ADV-2007-1935: avast! Server and Managed Client CAB and SIS Parsing Heap Overflow Vulnerabilities
Reported:
May 24, 2007
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