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Date: Wed, 31 Jan 2007 01:50:16 -0000
From: "NGS Software Insight Security Research" <>
To: <>, <>,
Subject: Remote Unauthenticated Code Execution CA BrightStor ARCserve Backup

Today: 31 January 2007
Reference: NGS00404
Discover: Mark Litchfield
Name: Remote Unauthenticated Code Execution CA BrightStor ARCserve Backup 
for Laptops & Desktops
Vendor: Computer Associates
Systems Affected: BrightStor ARCserve Backup for Laptops & Desktops r11.1
Risk: High
Status: Published

Discovered: 26 June 2006
Released: 26 June 2006
Approved: 26 June 2006
Reported: 26 June 2006
Fixed: 23 January 2007
Published: 30 January 2007

By sending a specially crafted packet to the LGSERVER.EXE process that
listens on TCP port 2200, it is possible to execute arbitrary code as
SYSTEM on a Windows Platform.

Technical Details
All packets to the Mobile Backup Service process (LGSERVER.EXE) on TCP
port 2200 appear to begin with the sequence "\x4e\x3d\x2c\x1b". Sending a
packet that contains \x4e\x3d\x2c\x1b followed by a string of 65535
characters causes the process to terminate.

The string overwrites the heap in memory it is possible to further
leverage the vulnerability so as to execute arbitrary code as SYSTEM.

Fix Information

NGSSoftware Insight Security Research
+44(0)208 401 0070


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