[NT] Buffer Overflow Vulnerability in Dr. Web
From: email@example.com To: firstname.lastname@example.org Date: 5 Mar 2003 21:33:34 +0200
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Buffer Overflow Vulnerability in Dr. Web
<http://www.sald.com> Dr. WEB is an antivirus scanner.
The new generation (DrWeb32) includes programs for Windows
95/98/ME/2000/NT/XP, DOS/386, OS/2, Novell NetWare, Linux, FreeBSD 3.xx
and 4.xx and Solaris x86.
A vulnerability in Dr Web allows a user with access to the server to gain
root privileges by overflowing a buffer in the program.
* Dr Web Version 4.28 and below
*Dr Web Version 4.29b and above
When a user with access to the system creates files with a very long name
it causes the buffer overflow and writes over the EIP, thus granting the
user the ability to execute arbitrary code with root privileges.
The program consists of a monitor and scanner. Only the scanner option was
tested on the 4.28a version and it was found vulnerable.
Build a folder with a very long name:
set a= AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
set b= BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
SET A = AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
SET B = BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
Depending on system.
When the Anti-virus tries to scan the folder it crashes.
Download latest version from Dr Web: <http://www.sald.com/get.html>
Information was provided by <mailto:firstname.lastname@example.org> David
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