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A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI
has been released. The new version includes many new and advanced
features, which makes it even easier to stay patched.

Download and test it today:
https://psi.secunia.com/

Read more about this new version:
https://psi.secunia.com/?page=changelog

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TITLE:
IpSwitch WS_FTP Server with SSH Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA28753

VERIFY ADVISORY:
http://secunia.com/advisories/28753/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
WS_FTP Server 6.x
http://secunia.com/product/14782/

DESCRIPTION:
securfrog has discovered a vulnerability in IpSwitch WS_FTP Server
with SSH, which can be exploited by malicious users to cause a DoS
(Denial of Service) or potentially compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the SSH Server
Service (SSHServer.exe) when handling arguments to the "opendir"
command. This can be exploited to cause a stack-based buffer overflow
by passing an overly long argument to the affected command.

Successful exploitation may allow execution of arbitrary code.

The vulnerability is confirmed in IpSwitch WS_FTP Server with SSH
version 6.1. Other versions may also be affected.

SOLUTION:
Grant only trusted users access to the SSH Server Service.

PROVIDED AND/OR DISCOVERED BY:
securfrog

ORIGINAL ADVISORY:
http://www.milw0rm.com/exploits/5044

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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:
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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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