Secunia

Mati Aharoni has discovered a vulnerability in Quick Tftp Server Pro, which can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the handling of mode fields and can be exploited to cause a stack-based buffer overflow via a read or write request with an overly long mode field.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 2.1. Other versions may also be affected.

Solution
Restrict network access to the TFTP service.

Provided and/or discovered by
Mati Aharoni

Changelog
Further details available in Customer Area

Original Advisory
http://www.offensive-security.com/0day/quick-tftp-poc.py.txt

Deep Links
Links available in Customer Area