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Update Protection against GhostScript PostScript Parser Stack Overflow Vulnerability

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Check Point Reference: CPAI-2010-078
Date Published:
Severity:
Source: IPS Research Center
Industry Reference(s): CVE-2010-1869
Protection Provided by: Security Gateway
  • R71
  • R70
VPN-1
  • NGX R65
VSX
  • NGX R65
IPS-1
  • IPS-1
  • IPS-1 NGX R65
Who is Vulnerable?
GhostScript 8.70
GhostScript 8.64
Vulnerability Description
A stack overflow vulnerability has been discovered in GhostScript, an interpreter for the PostScript language and the Portable Document Format (PDF). A remote attacker may exploit this issue to execute arbitrary code on a vulnerable system.
Vulnerability Details
The vulnerability is within the parser function of GhostScript. A remote attacker may exploit this issue via a specially crafted PostScript file. Successful exploitation of this vulnerability could allow the attacker to execute arbitrary code on a target system.

Protection Overview
This protection will detect and block malformed PostScript files.

In order for the protection to be activated, update your Security Gateway/VPN-1 product to the latest IPS/SmartDefense update. For information on how to update IPS/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.

Security Gateway: R70/R71

How Can I Protect My Network?
1. In the IPS tab, click Protections > By Protocol > Application Intelligence > Content Protection.
2. In the right pane, double-click the GhostScript PostScript Parser Stack Overflow 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: Content Protection Violation
Attack Information: GhostScript PostScript parser stack overflow

VPN-1 NGX R65 & VPN-1 VSX NGX R65

How Can I Protect My Network?
1. In the SmartDefense tab, click Application Intelligence > Content Protection.
2. Select the following protection:

GhostScript PostScript Parser Stack Overflow

3. In the configuration pane, under Settings > Mode, check Active.
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: Content Protection Violation
Attack Information: GhostScript PostScript parser stack overflow

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 PostScript Skimmer protection group.
3. Click PostScript Compliance (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 PostScript Skimming
Description: PostScript Compliance