Tftpd32 DNS Server Buffer Overflow
|Check Point Reference:||CPAI-2012-315|
|Source:||Secunia Advisory 49301|
|Protection Provided by:||
Who is Vulnerable?
Philippe Jounin TFTPD32 v4.00
A buffer overflow vulnerability has been reported in Tftpd32.
The vulnerability is due to an error in the way the DNS component of Tftpd32 handles specially crafted domain labels. A remote attacker can exploit this issue by sending a specially crafted DNS query to a vulnerable Tftpd32 server. Successful exploitation could allow an attacker to execute arbitrary code on the target server, in the security context of the logged-on user.
This protection will detect and block specially crafted DNS requests.
In order for the protection to be activated, update your product to the latest update. For information on how to update , go to SBP-2006-05, Protection tab and select the version of your choice.
To configure the defense, select your product from the list below and follow the related protection steps.
Security Gateway R75 / R71 / R70
How Can I Protect My Network?
- In the IPS tab, click Protections and find the Tftpd32 DNS Server Buffer Overflow protection using the Search tool and Edit the protection's settings.
- Install policy on all modules.
How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries:
Attack Name: DNS Enforcement Violation
Attack Information: Tftpd32 DNS Server Buffer Overflow