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TITLE:
FtpXQ Server "MKD" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA22540

VERIFY ADVISORY:
http://secunia.com/advisories/22540/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
FtpXQ Server 3.x
http://secunia.com/product/12414/

DESCRIPTION:
Greg Linares has discovered a vulnerability in FTPXQ Server, which
can be exploited by malicious users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error within the handling of
the "MKD" command.  This can be exploited to exhaust available CPU
resources by supplying an overly long argument (more than 512 bytes)
to the vulnerable command.

The vulnerability is confirmed in version 3.0.1.  Other versions may
also be affected.

SOLUTION:
Grant only trusted users access to the FTP service.

PROVIDED AND/OR DISCOVERED BY:
Greg Linares

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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