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TITLE:
GoodTech SSH Server SFTP Processing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA32375

VERIFY ADVISORY:
http://secunia.com/advisories/32375/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
GoodTech SSH Server 6.x
http://secunia.com/advisories/product/20214/

DESCRIPTION:
r0ut3r has discovered a vulnerability in GoodTech SSH Server, which
can be exploited by malicious users to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error when processing
overly long strings passed as arguments to e.g. the SFTP "open",
"opendir", and "unlink" commands, and can be exploited to cause a
stack-based buffer overflow.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 6.4. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
r0ut3r

ORIGINAL ADVISORY:
http://milw0rm.com/exploits/6804

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