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Update Protection against Microsoft Exchange Server MS-TNEF Memory Corruption Vulnerability (MS09-003)

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Check Point Reference: CPAI-2009-010
Date Published:
Severity:
Last Updated:
Source: Microsoft Security Bulletin MS09-003
Industry Reference(s): CVE-2009-0098
Protection Provided by: VPN-1
  • NGX R65
  • NGX R62
  • NGX R61
  • NGX R60
VSX
  • NGX R65
InterSpect
  • NGX
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
Microsoft Exchange Server 2007
Microsoft Exchange Server 2007 SP1
Microsoft Exchange Server 2003 SP2
Microsoft Exchange Server 2000 SP3 with the Exchange 2000 Post-SP3 Update Rollup of August 2004
Vulnerability Description
A remote code execution vulnerability has been reported in the way Microsoft Exchange Server decodes the Transport Neutral Encapsulation Format (TNEF) data for a message. The Microsoft Exchange Server is an implementation of an email server capable of handling numerous Internet protocol, including the Simple Mail Transfer Protocol (SMTP). TNEF is a format used by the Microsoft Exchange Server when sending messages formatted as Rich Text Format (RTF). A remote attacker may exploit this issue to execute arbitrary code on a target system.
Update/Patch Available
Apply patches:
Microsoft Security Bulletin MS09-003
Vulnerability Details
The vulnerability is due to an error in the Exchange server that does not properly decode messages in TNEF format. A remote attacker may exploit this issue via a specially crafted TNEF message. Successful exploitation of this issue could allow execution of arbitrary code when a user opens or previews a malicious e-mail message or when the Microsoft Exchange Server Information Store processes the specially crafted TNEF message.

Protection Overview
By enabling this protection, SmartDefense will detect and block the transferring of malformed RTF files over SMTP.
By enabling this protection, IPS-1 will detect and block SMTP commands containing malformed TNEF documents.

In order for the protection to be activated, update your VPN-1 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.

VPN-1 NGX R65 & R62

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Mail > SMTP > Microsoft Exchange Server MS-TNEF Memory Corruption (MS09-003).
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: SMTP Protection Violation
Attack Information: Microsoft Exchange server MS-TNEF memory corruption (MS09-003)

VPN-1 NGX R61 & R60

How Can I Protect My Network?
1. In the Smartdefense tree, click Application Intelligence > Mail > SMTP.
2. Enable the following protection:

Microsoft Exchange Server MS-TNEF Memory Corruption (MS09-003)

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: SMTP Protection Violation
Attack Information: Microsoft Exchange server MS-TNEF memory corruption (MS09-003)

VPN-1 VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Mail > SMTP > Microsoft Exchange Server MS-TNEF Memory Corruption (MS09-003).
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: SMTP Protection Violation
Attack Information: Microsoft Exchange server MS-TNEF memory corruption (MS09-003)

InterSpect NGX

How Can I Protect My Network?
1. In the left pane, select Profiles > Default Protection and select the SmartDefense page of the profile.
2. In the SmartDefense tree, click Application Intelligence > Mail > SMTP.
3. Select the following protection:

Microsoft Exchange Server MS-TNEF Memory Corruption (MS09-003)

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: SMTP Protection Violation
Attack Information: Microsoft Exchange server MS-TNEF memory corruption (MS09-003)

IPS-1 & IPS-1 NGX R65

How Can I Protect My Network?
1. In the IPS-1 Policy Manager, click on the Protection tab.
2. In the Protection tree, click Application Intelligence > Badfiles, and select the TNEF protection group.
3. Click CVE-2009-0098 Malfomed Compressed RTF Content (MS09-003) (IPS-1 NGX R65 only).
4. In the configuration pane, under Settings, check Active.
5. Click on Install Policy.

How Do I Know if My Network is Under Attack?
Upon attack, the following entries will be logged:

Alert Name: Badfiles TNEF file Alert/Filter
Description: CVE-2009-0098 Malfomed Compressed RTF Content (MS09-003)