F-Secure Anti-Virus packed executables security bypass
| fsecure-executables-security-bypass (36833) |  Medium Risk |
Description:
F-Secure Anti-Virus for Windows Servers could allow a local attacker to bypass security restrictions, caused by the improper handling of archives and packed executables. By placing specially-crafted archives or packed executables in the "system32" directory, an attacker could exploit this vulnerability to bypass virus scanning.
Platforms Affected:
- F-Secure, Anti-Virus for Windows Servers 7.00
- Microsoft, Windows 2000 SP4 Server
- Microsoft, Windows 2003 Server
Remedy:
Apply the Client Security Hotfix fsav720-01-signed.fsfix for this vulnerability, available from the F-Secure Anti-Virus Web site. See References.
Consequences:
Bypass Security
References:
- F-Secure Anti-Virus Web site, F-Secure Anti-Virus for Windows Servers at http://www.f-secure.com/products/fsavsrv.html.
- F-Secure Security Bulletin FSC-2007-6, Vulnerabilities in scanning of specially crafted archives and certain packed executables at http://www.f-secure.com/security/fsc-2007-6.shtml.
- BID-25824: F-Secure Anti-Virus for Windows Servers Malware Detection Bypass Vulnerability
- CVE-2007-5143: F-Secure Anti-Virus for Windows Servers 7.0 64-bit edition allows local users to bypass virus scanning by using the system32 directory to store a crafted (1) archive or (2) packed executable. NOTE: in many environments, this does not cross privilege boundaries because any process able to write to system32 could also shut off F-Secure Anti-Virus.
- SA26948: F-Secure Archives and Packed Executables Detection Bypass
- SECTRACK ID: 1018745: F-Secure Anti-Virus May Fail to Scan Certain Archives in the System32 Directory
- VUPEN/ADV-2007-3277: F-Secure Anti-Virus for Windows Servers Malware Detection Bypass Issue
Reported:
Sep 27, 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 (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