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MicroWorld eScan Server Directory Traversal
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SUMMARY
"The Powerful Management Console of <http://www.mwti.net> eScan provides
options for system administrators to remotely administer a vast network of
clients. It also allows them to remotely install eScan, deploy upgrades
and updates and enforce an Integrated Security Policy for the entire
Enterprise." A vulnerability in the way the MicroWorld eScan server works
allows remote attackers to cause the product to provide access to files
that would be otherwise inaccessible.
DETAILS
Vulnerable Systems:
* MicroWorld eScan Server (aka eScan Management Console) version
9.0.742.98
The eScan Server (eserv.exe) listens on port 2021 for FTP connections
using c:\pub as root path.
Although the server tries to avoid possible directory traversal attacks
for example rejecting the dotdot patterns, is still possible for an
attacker to download any file from the disk of the remote system simply
applying a slash or a backslash at the beginning of the filename for
selecting the root path of the disk. For example /boot.ini,
\windows\win.ini and so on.
Only downloading files is allowed by the server, so deleting or uploading
custom files is not possible.
Exploit:
Clicking on the following URL:
ftp://SERVER:2021//windows/win.ini
Or manually:
ftp -A
open SERVER 2021
get
/windows/win.ini
local_win.ini
ADDITIONAL INFORMATION
The information has been provided by <mailto:aluigi@autistici.org> Luigi
Auriemma.
The original article can be found at:
<http://aluigi.altervista.org/adv/escaz-adv.txt>
http://aluigi.altervista.org/adv/escaz-adv.txt
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