TITLE:
Freeftpd Multiple Commands Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA17624

VERIFY ADVISORY:
http://secunia.com/advisories/17624/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Freeftpd 1.x
http://secunia.com/product/6138/

DESCRIPTION:
barabas mutsonline has discovered a vulnerability in Freeftpd, which
can be exploited by malicious users to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error when handling MKD
and DELE commands. This can be exploited to cause a stack-based buffer
overflow by providing an overly long directory name as parameter to
the commands. Other commands may also be affected.

Successful exploitation allows arbitrary code execution but requires
logon to the FTP server.

The vulnerability has been confirmed in version 1.0.9. Other versions
may also be affected.

SOLUTION:
Grant only trusted users access to the FTP server.

PROVIDED AND/OR DISCOVERED BY:
barabas mutsonline

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