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TITLE:
WS_FTP Server FTP Commands Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA21932

VERIFY ADVISORY:
http://secunia.com/advisories/21932/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
WS_FTP Server 5.x
http://secunia.com/product/3853/

DESCRIPTION:
A vulnerability have been reported in WS_FTP Server, which can be
exploited by malicious users to compromise a vulnerable system.

The vulnerability is due to a boundary error when parsing arguments
to the "XCRC", "XSHA1", and "XMD5" commands. This can be exploited to
cause stack-based buffer overflows via overly long command arguments.

Successful exploitation allows execution of arbitrary code.

The vulnerability has been reported in version 5.05. Other versions
may also be affected.

SOLUTION:
Apply patch.
http://ipswitch.com/support/ws_ftp-server/releases/wr505hf1.asp

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://ipswitch.com/support/ws_ftp-server/releases/wr505hf1.asp

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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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