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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
http://corporate.secunia.com/how_to_buy/15/?r=l

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TITLE:
Universal FTP Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA22553

VERIFY ADVISORY:
http://secunia.com/advisories/22553/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Universal FTP 1.x
http://secunia.com/product/12612/

DESCRIPTION:
Some vulnerabilities have been discovered in Universal FTP, which can
be exploited by malicious people to cause a DoS (Denial of Service).

1) An error within the processing of the "STOR" and "PUT" commands
can be exploited to crash the FTP service with a runtime error
(invalid operation at current state) by sending e.g. two "STOR"
commands in a row.

2) Passing a "*" character to e.g. the "MKD" FTP command crashes the
FTP service with a runtime error (Path not found).

3) Passing a "|" character to e.g. the "MKD" FTP command crashes the
FTP service with a runtime error (Bad file name or number).

4) Passing a couple of spaces or an overly long argument to the "MKD"
FTP command crashes the FTP service with a runtime error (File not
found).

None of the vulnerabilities requires a user to be authenticated.

The vulnerabilities are all confirmed in version 1.0.50 and
vulnerability #1 is also confirmed in version 1.0.44. Other versions
may also be affected.

SOLUTION:
Use another product.

PROVIDED AND/OR DISCOVERED BY:
1) Parvez Anwar

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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.

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http://secunia.com/about_secunia_advisories/


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