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F-Secure Products LHA Archive Handling Buffer Overflow Advisory Available in Danish  Advisory Available in German 

Secunia Advisory: SA25426  
Release Date: 2007-05-30
Last Update: 2007-06-04

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software:F-Secure Anti-Virus 2005
F-Secure Anti-Virus 2006
F-Secure Anti-Virus 2007
F-Secure Anti-Virus 5.x
F-Secure Anti-Virus Client Security 6.x
F-Secure Anti-Virus for Citrix Servers 5.x
F-Secure Anti-Virus for Linux 4.x
F-Secure Anti-Virus for Microsoft Exchange 6.x
F-Secure Anti-Virus for MIMEsweeper 5.x
F-Secure Anti-Virus for Windows Servers 5.x
F-Secure Anti-Virus for Workstations 5.x
F-Secure Internet Gatekeeper 6.x
F-Secure Internet Gatekeeper for Linux 2.x
F-Secure Internet Security 2005
F-Secure Internet Security 2006
F-Secure Internet Security 2007

CVE reference:CVE-2007-2966 (Secunia mirror)

Want to know the next time vulnerabilities are fixed in this product?
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Description:
A vulnerability has been reported in various F-Secure products, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the processing of LHA archives and can be exploited to cause a buffer overflow when decompressing a specially crafted archive.

The vulnerability is related to #1 in:
SA21996

Successful exploitation may allow execution of arbitrary code.

Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.

Solution:
Apply hotfixes.

F-Secure Internet Security 2005 - 2007:
Hotfix distributed automatically.

F-Secure Anti-Virus 2005 - 2007:
Hotfix distributed automatically.

F-Secure Protection Service for Consumers:
Hotfix distributed automatically.

F-Secure Anti-Virus for Workstations 5.44:
ftp://ftp.f-secure.com/support/hotfix/fsavcs/fsavwk602-04-signed.fsfix

F-Secure Anti-Virus Client Security 6.00 - 6.03:
ftp://ftp.f-secure.com/support/hotfix/fsavcs/fsavwk602-04-signed.fsfix

F-Secure Anti-Virus for Windows Servers 5.50- 5.52:
ftp://ftp.f-secure.com/support/hotfix/fsav-server/fsavsr552-11-signed.fsfix

F-Secure Anti-Virus for Citrix Servers 5.50-5.52:
ftp://ftp.f-secure.com/support/hotfix/fsav-server/fsavsr552-11-signed.fsfix

F-Secure Anti-Virus for MIMEsweeper 5.61:
ftp://ftp.f-secure.com/support/hotfix/fsav-server/fsavsr552-11-signed.fsfix

F-Secure Anti-Virus for MS Exchange 6.01:
ftp://ftp.f-secure.com/support/hotfix/fsav-mse/fscss631-08.zip

F-Secure Anti-Virus for MS Exchange 6.40:
http://www.f-secure.com/webclub/fsavmse6.html

F-Secure Internet Gatekeeper 6.60:
ftp://ftp.f-secure.com/support/hotfix/fsig/fsigk660-03.zip

F-Secure Anti-Virus for Linux Servers 4.64-4.65:
http://www.f-secure.com/webclub/fsavsrvl.html

F-Secure Anti-Virus for Linux Gateways 4.64-4.65:
http://www.f-secure.com/webclub/fsavgwl.html

F-Secure Linux Client Security 5.30:
http://www.f-secure.com/webclub/fscsl.html

F-Secure Linux Server Security 5.30:
http://www.f-secure.com/webclub/fsssl.html

F-Secure Internet Gatekeeper for Linux 2.16:
http://www.f-secure.com/webclub/fsigkl.html

Provided and/or discovered by:
Originally discovered by Tavis Ormandy of Google Security Team in gzip.

The vendor credits Sergio Alvarez of n.runs AG for providing additional information.

Changelog:
2007-06-01: Added CVE reference.
2007-06-04: Added additional link in Original Advisory section.

Original Advisory:
F-Secure:
http://www.f-secure.com/security/fsc-2007-1.shtml

n.runs AG:
http://www.nruns.com/advisories/%5Bn....rsing%20BufferOverflow%20Advisory.txt

Other References:
SA21996:
http://secunia.com/advisories/21996/



Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

22 Related Secunia Security Advisories, displaying 10

1. F-Secure Archives Handling Unspecified Vulnerabilities
2. F-Secure Products CAB and RAR Archives Security Bypass
3. F-Secure LHA and RAR Archives Security Bypass
4. F-Secure Packed Executable and Archive Scanning Denial of Service
5. F-Secure Anti-Virus Real-Time Scanning Component Privilege Escalation
6. F-Secure Products OpenSSL ASN.1 Denial Of Service Vulnerability
7. F-Secure Antivirus Products Scanning Bypass Vulnerability
8. F-Secure Products Web Console Buffer Overflow Vulnerability
9. F-Secure Anti-Virus Archive Handling Vulnerabilities
10. F-Secure Anti-Virus Internet Gatekeeper/Linux Gateway Privilege Escalation

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