OSVDB ID: 27495

Title: Tumbleweed Email Firewall (EMF) LHA Processing MMSDecompose Function Multiple Overflow

Info

Disclosure

Jul 25, 2006

Discovery

Unknown

Dates

Exploit

Unknown

Solution

Unknown

Description

A remote overflow exists in the Tumbleweed Email Firewall. The mail decomposer module (MMSDecompose) of Tumbleweed Email Firewall fails to handle specially crafted LHA compressed archives resulting in a stack overflow. By sending a crafted mail, an attacker can potentially execute arbitrary code resulting in a loss of integrity and/or availability.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Integrity, Loss of Availability

Solution

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround (apparently recommended by vendor to the vuln researcher): - Stopping EMF service - Removing or renaming the wlha32.dll file found in the EMF file directory - Restarting EMF service

Products

Tumbleweed Communications Corp.

Email Firewall (EMF)

All

References

CVE ID: 2006-3901 (see also: NVD)
Secunia Advisory ID: 21194
ISS X-Force ID: 27942 27945 27946
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2006-07/0560.html
Other Advisory URL: http://www.hustlelabs.com/advisories/04072006_tweed.pdf
Vendor URL: http://www.tumbleweed.com/products/mailgate/emailfirewall.html

Credit

Ryan Smith - whatstheaddressgmail.com - Hustle Labs

Direct URL: http://osvdb.org/27495