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Secunia Security Advisory 32150

Secunia Security Advisory 32150
Posted Oct 6, 2008
Authored by Secunia | Site secunia.com

Secunia Security Advisory - dmnt has discovered two vulnerabilities in Serv-U, which can be exploited by malicious users to cause a DoS (Denial of Service) or compromise a vulnerable system.

tags | advisory, denial of service, vulnerability
SHA-256 | 8ae2c5607ab9b3e3303853bfc8864035f8f1b8b3fc5f89a8ede6530968f3e081

Secunia Security Advisory 32150

Change Mirror Download
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Do you need accurate and reliable IDS / IPS / AV detection rules?

Get in-depth vulnerability details:
http://secunia.com/binary_analysis/sample_analysis/

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TITLE:
Serv-U File Renaming Directory Traversal and STOU Denial of Service

SECUNIA ADVISORY ID:
SA32150

VERIFY ADVISORY:
http://secunia.com/advisories/32150/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Serv-U File Server 7.x
http://secunia.com/advisories/product/19573/

DESCRIPTION:
dmnt has discovered two vulnerabilities in Serv-U, which can be
exploited by malicious users to cause a DoS (Denial of Service) or
compromise a vulnerable system.

1) An error in the handling of the "STOU" FTP command can be
exploited to exhaust available CPU resources via a specially crafted
argument (e.g. "CON:1").

2) An input validation error in the FTP service when renaming files
can be exploited to overwrite or create arbitrary files with
user-supplied content via directory traversal attacks.

The vulnerabilities are confirmed in version 7.3.0.0. Other versions
may also be affected.

SOLUTION:
Restrict access to the FTP service.

PROVIDED AND/OR DISCOVERED BY:
dmnt

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/6660
http://milw0rm.com/exploits/6661

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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/advisories/secunia_security_advisories/

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