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Home - AdvisoriesPrint
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CERT-In Advisory CIAD-2004-0017

Check Point VPN-1 ASN.1 Decoding Heap Overflow Vulnerability

Original Issue Date: July 29, 2004

Severity Rating: High

Systems Affected

  • Check Point FireWall-1 GX 2.x Check Point Provider-1
  • Check Point SSL Network Extender
  • Check Point VPN-1 SecureClient
  • Check Point VPN-1 SecuRemote
  • Check Point VPN-1/Firewall-1 NG
  • Check Point VPN-1/FireWall-1 NG with Application Intelligence AI
  • Check Point VPN-1/FireWall-1 VSX NG

Overview

A vulnerability has been discovered in the ASN.1 decoding library within various Check Point VPN-1 products, which can be exploited to compromise a vulnerable system.

Description

Check Point VPN-1 is used to provide secure remote access to private networks from un-trusted network environments.

A vulnerability has been discovered in the ASN.1 decoding library within the VPN-1 product which could make it possible for a malicious user to cause a buffer overflow when establishing an encrypted connection to a virtual private network VPN .



An unauthenticated remote attacker can trigger this vulnerability through a single-packet attack. Further, it may be possible for attackers to conceal the source of attacks and perform a blind-spoofed attack if UDP-based IKE negotiation is enabled.

Solution

Check Point has recommended that customers install an update on the enforcement modules of the affected products.

The issue has been addressed in the most recent Hotfix Accumulators HFAs and ASN.1 Hotfixes. Software Subscription customers can download updates for affected products from the Check Point site.

 

Vendor Information

Check Point:

References

Secunia
http://secunia.com/advisories/12177/

ISS
http://xforce.iss.net/xforce/alerts/id/178

Zone-h
http://www.zone-h.org/en/advisories/read/id=5158/

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-2436857

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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