TITLE:
glFTPd "SITE NFO" Directory Traversal Vulnerability

SECUNIA ADVISORY ID:
SA14354

VERIFY ADVISORY:
http://secunia.com/advisories/14354/

CRITICAL:
Less critical

IMPACT:
Exposure of system information, Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
glFTPd 2.x
http://secunia.com/product/4686/
glFTPd 1.2x
http://secunia.com/product/1180/

DESCRIPTION:
Paul Craig has reported a vulnerability in glFTPd, which can be
exploited by malicious users to detect the presence of local files
and disclose some system and sensitive information.

The vulnerability is caused due to an input validation error in the
plugins "sitenfo.sh", "sitezipchk.sh" and "siteziplist.sh" handling
the "SITE NFO" command. This can be exploited to determine the
existence of arbitrary local files, disclose the content of arbitrary
directories and disclose the content of files in arbitrary ZIP files
via directory traversal attacks.

Examples:
SITE NFO ../../[file]
SITE NFO ../../[directory]/*
SITE NFO ../../[ZIP file] [file]

NOTE: Exploitation is limited to files inside the glFTPd chroot.

The vulnerability has been reported in version 1.26 through 2.00.
Other versions may also be affected.

SOLUTION:
Restrict access to "sitenfo.sh", "siteziplist.sh" and
"sitezipchk.sh". This may affect functionality.

PROVIDED AND/OR DISCOVERED BY:
Paul Craig, Pimp Industries

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