Update Protection against Microsoft CSS Tag Memory Corruption Vulnerability (MS07-033)
| Check Point Reference: | CPAI-2007-073 | |
| Date Published: | ||
| Severity: | ||
| Source: | Microsoft Security Bulletin MS07-033 | |
| Industry Reference(s): | CVE-2007-1750 | |
| Protection Provided by: |
VPN-1
|
|
| Who is Vulnerable? Internet Explorer 5.01 on Microsoft Windows 2000 SP4 Internet Explorer 6 SP1 on Microsoft Windows 2000 SP4 Internet Explorer 6 on Windows XP SP2 Internet Explorer 6 on Windows XP Professional x64 Edition Internet Explorer 6 on Windows XP Professional x64 Edition SP2 Internet Explorer 6 on Windows Server 2003 SP1 Internet Explorer 6 on Windows Server 2003 SP2 Internet Explorer 6 on Windows Server 2003 x64 Edition Internet Explorer 6 on Windows Server 2003 x64 Edition SP2 Internet Explorer 6 on Windows Server 2003 with SP1 (Itanium) Internet Explorer 6 on Windows Server 2003 with SP2 (Itanium) Internet Explorer 7 on Windows XP SP2 Internet Explorer 7 on Windows XP Professional x64 Edition Internet Explorer 7 on Windows XP Professional x64 Edition SP2 Internet Explorer 7 on Windows Server 2003 SP1 Internet Explorer 7 on Windows Server 2003 SP2 Internet Explorer 7 on Windows Server 2003 x64 Edition Internet Explorer 7 on Windows Server 2003 x64 Edition SP2 Internet Explorer 7 on Windows Server 2003 with SP1 (Itanium) Internet Explorer 7 on Windows Server 2003 with SP2 (Itanium) Internet Explorer 7 on Windows Vista Internet Explorer 7 on Windows Vista x64 Edition | ||
| Vulnerability Description A remote code execution vulnerability has been reported in the way Microsoft Internet Explorer handles CSS tags. CSS (Cascading Style Sheets) is a formatting method for Web pages using HTML. A remote attacker could exploit this issue by convincing a user to visit a specially crafted HTML document or open a malicious web page. Successful exploitation could result in remote code execution on the target system. |
||
|
Update/Patch Available Apply patches: Microsoft Security Bulletin MS07-033 |
|
|
Vulnerability Details The vulnerability is due to a memory corruption error in Microsoft Internet Explorer that fails to properly handle malformed CSS tags. To trigger this flaw, an attacker can create a malicious web page with a specially crafted CSS tag. Successful exploitation allows execution of arbitrary code on the vulnerable system once the malicious page is loaded. |
Protection Overview
By enabling this protection, SmartDefense will detect and block the vulnerable CSS tag. Depending on the traffic mix, activating this protection may result in performance degradation.
In order for the protection to be activated, update your VPN-1/InterSpect product to the latest SmartDefense update. For information on how to update SmartDefense, 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.
Additional Information
The Update released on June 28, 2007 includes the following protections:
Microsoft Win32 API Vulnerability (MS07-035) - CPAI-2007-072
Microsoft CSS Tag Memory Corruption Vulnerability (MS07-033) - CPAI-2007-073
Microsoft Visio Vulnerabilities (MS07-030) - CPAI-2007-074
Microsoft Office MSODataSourceControl ActiveX Control Vulnerability (CPAI-2007-075)
Microsoft Speech API and Microsoft Internet Explorer Vulnerabilities (MS07-033) - CPAI-2007-076
VPN-1 NGX R65 & R62
How Can I Protect My Network?
1. In the SmartDefense tab, click Web Intelligence > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities > Block CSS Tag Memory Corruption Vulnerability (MS07-033).
2. In the configuration pane, under Settings > Mode, check Active.
3. 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: CSS tag memory corruption vulnerability (MS07-033)
VPN-1 NGX R61, R60, VPN-1 NG with Application Intelligence R55W
How Can I Protect My Network?
1. In the Web Intelligence tree, click HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities.
2. Select the following pattern:
Block CSS Tag Memory Corruption Vulnerability (MS07-033)
3. Install security 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: CSS tag memory corruption vulnerability (MS07-033)
VPN-1 NG with Application Intelligence R55
How Can I Protect My Network? Block CSS Tag Memory Corruption Vulnerability (MS07-033)
1. In the SmartDefense tree, click Application Intelligence > Web > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities.
2. Select the following pattern:
3. Install security policy on all modules.
How Do I Know if My Network is Under Attack?
Rule #99892 will appear on the SmartView Tracker.
VPN-1 VSX NGX
How Can I Protect My Network? Block CSS Tag Memory Corruption Vulnerability (MS07-033)
1. In the SmartDefense tree, click Application Intelligence > Web > HTTP Client Protections > Microsoft Internet Explorer Vulnerabilities.
2. Select the following pattern:
3. Install security policy on all modules.
How Do I Know if My Network is Under Attack?
Rule #99892 will appear on the SmartView Tracker.
InterSpect NGX
How Can I Protect My Network?
1. In the left pane, select Profiles > Default Protection and select the Web Intelligence page of the profile.
2. In the Web Intelligence tree, click HTTP Client Protections > Microsoft Internet Explorer vulnerabilities.
3. Select the following pattern:
Block CSS Tag Memory Corruption Vulnerability (MS07-033)
4. Install security 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: CSS tag memory corruption vulnerability (MS07-033)
InterSpect 2.0
How Can I Protect My Network?
1. In the SmartDefense tree, click Application Intelligence > Web > HTTP Client Protections > Microsoft Internet Explorer vulnerabilities.
2. Select the following pattern:
Block CSS Tag Memory Corruption Vulnerability (MS07-033)
3. Install security 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: CSS tag memory corruption vulnerability (MS07-033)