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Update Protection against Novell Netware FTP Server Remote Stack Buffer Overflow

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Check Point Reference: CPAI-2010-130
Date Published:
Severity:
Last Updated:
Source: Secunia Advisory: SA39151
Industry Reference(s): CVE-2010-0625
Protection Provided by: Security Gateway
  • R75
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Novell Netware 5.1
Novell Netware 6
Novell Netware 6.5
Novell NetWare FTP Server prior to 5.10.01
Vulnerability Description
A buffer overflow vulnerability exists in Novell Netware, a network operating system that provides file sharing and other services such as printing and email. The vulnerability is due to a boundary error in NWFTPD.nlm when processing the MKD and RMD FTP commands. Remote authenticated attackers can exploit this vulnerability by sending maliciously crafted commands to the affected server.
Update/Patch Available
The vendor, Novell, has released an advisory addresing this vulnerability.
Vulnerability Details
The vulnerability is due to insufficient boundary checks when processing the MKD and RMD FTP commands. Remote authenticated attackers could exploit this vulnerability by connecting to a vulnerable Netware FTP Server and sending a malicious MKD or RMD command to the target server.

Protection Overview
The protection will detect and block FTP RMD or MKD commands accessing long pathnames starting with a ~ character.

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-2006-05Protection 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

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > IPS Software Blade > Application Intelligence > FTP.
2. In the right pane, double-click the following protection:

Novell Netware FTP Server Remote Stack Buffer Overflow

3. In the Protection Details window, click on Edit. Choose the protection's Action (Override IPS Policy with: Prevent/Detect), and apply Additional Settings
4. Install policy on all modules.

How Do I Know if My Network is Under Attack?
SmartView Tracker will log the following entries: 

Attack Name: FTP Enforcement Violation
Attack Information: Novell Netware FTP server remote stack buffer overflow

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?

How Do I Know if My Network is Under Attack?