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NGS00404.txt

NGS00404.txt
Posted Feb 1, 2007
Authored by Mark Litchfield | Site ngssoftware.com

BrightStor ARCserve Backup for Laptops and Desktops r11.1 suffers from a remote code execution vulnerability. 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.

tags | advisory, remote, arbitrary, tcp, code execution
systems | windows
MD5 | b7f57a2008ba7f24d464595979b82415

NGS00404.txt

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=======
Summary
=======
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

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

===========
Description
===========
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
===============
http://supportconnectw.ca.com/public/sams/lifeguard/infodocs/babldimpsec-notice.asp

NGSSoftware Insight Security Research
http://www.ngssoftware.com
http://www.databasesecurity.com/
http://www.nextgenss.com/
+44(0)208 401 0070


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