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Tftpd32 DNS Server Buffer Overflow - ver 2

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Check Point Reference: CPAI-2014-1532
Date Published:
Severity:
Last Updated:
Protection Provided by: Security Gateway
  • R77
  • R76
  • R75
Who is Vulnerable?
Philippe Jounin TFTPD32 v4.00
Vulnerability Description
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.

Protection Overview
This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, 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 R77 / R76 / R75 / R71 / R70

How Can I Protect My Network?

  1. In the IPS tab, click Protections and find the Tftpd32 DNS Server Buffer Overflow - ver 2 protection using the Search tool and Edit the protection's settings.
  2. 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 - ver 2