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TITLE:
Classic FTP Directory Download Directory Traversal Vulnerability

SECUNIA ADVISORY ID:
SA30708

VERIFY ADVISORY:
http://secunia.com/advisories/30708/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Classic FTP 1.x
http://secunia.com/product/19134/

DESCRIPTION:
Tan Chew Keong has reported a vulnerability in Classic FTP, which can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an input validation error when
downloading directories containing files with directory traversal
specifiers in the filename. This can be exploited to download files
to an arbitrary location on a user's system.

Successful exploitation requires that the user is tricked into
connecting and downloading a directory from a malicious FTP server.

The vulnerability is reported in version 1.02. Other versions may
also be affected.

SOLUTION:
Do not download directories from untrusted FTP servers.

PROVIDED AND/OR DISCOVERED BY:
Tan Chew Keong

ORIGINAL ADVISORY:
http://vuln.sg/classicftp102-en.html

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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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