Home Page | Skip to Navigation | Skip to Content | Skip to Search | Skip to Footer

Update Protection against Apple Safari Right-to-Left Text Rendering Use After Free Vulnerability

Subscribe

Check Point Reference: CPAI-2010-375
Date Published:
Severity:
Source: Secunia Advisory: SA38932
Industry Reference(s): CVE-2010-0049
Protection Provided by: Security Gateway
  • R75
Who is Vulnerable?
Apple Safari prior to 4.0.5
Vulnerability Description
A memory corruption vulnerability has been discovered in Apple Safari. Safari is a web browsing application developed by Apple. A remote attacker could exploit this issue by convincing a user to open a maliciously crafted HTML, which may allow the attacker to execute arbitrary code on the affected system.
Vulnerability Details
The vulnerability is due to a use-after-free error when handling HTML elements containing right-to-left displayed text. A remote attacker may exploit this issue to execute arbitrary code on the target machine by enticing a user into opening a specially crafted HTML document. Successful exploitation of this vulnerability may cause the application to terminate abnormally and allow execution of arbitrary code on the affected system.

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-2006-05Protection 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 > Web Intelligence > HTTP Client Protections.
2. In the right pane, double-click the Apple Safari Right-to-Left Text Rendering Use After Free Code Execution protection.
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: Web Client Enforcement Violation
Attack Information: Apple Safari Right-to-Left text rendering use after free code execution