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TITLE:
KnFTP FTP Command Processing Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA45907

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45907/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45907

RELEASE DATE:
2011-09-06

DISCUSS ADVISORY:
http://secunia.com/advisories/45907/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/45907/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
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 * Systems Affected
 * Approve Distribution
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https://ca.secunia.com/?page=viewadvisory&vuln_id=45907

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Qixu Liu has discovered a vulnerability in KnFTP, which can be
exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error when processing
FTP commands and can be exploited to cause a stack-based buffer
overflow via an overly long string passed e.g. via the FTP "PASS"
command.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 1.0.0. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted hosts only.

PROVIDED AND/OR DISCOVERED BY:
Qixu Liu, NCNIPC.

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/bugtraq/2011-09/0015.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
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vulnerabilities.

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