CVE-2008-5849

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-01-06 · updated 2026-06-16
Weakness: CWE-200

Description

Check Point VPN-1 R55, R65, and other versions, when Port Address Translation (PAT) is used, allows remote attackers to discover intranet IP addresses via a packet with a small TTL, which triggers an ICMP_TIMXCEED_INTRANS (aka ICMP time exceeded in-transit) response containing an encapsulated IP packet with an intranet address, as demonstrated by a TCP packet to the firewall management server on port 18264.

Affected products

checkpoint Vpn-1: r55, r65

References

http://secunia.com/advisories/32728
http://www.portcullis-security.com/293.php
http://www.securityfocus.com/bid/32306
http://www.vupen.com/english/advisories/2008/3229
https://exchange.xforce.ibmcloud.com/vulnerabilities/46645
https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk36321
https://svn.wald.intevation.org/svn/openvas/trunk/openvas-plugins/scripts/checkpoint-vpn1-pat-information-disclosure.nasl
http://secunia.com/advisories/32728
http://www.portcullis-security.com/293.php
http://www.securityfocus.com/bid/32306
http://www.vupen.com/english/advisories/2008/3229
https://exchange.xforce.ibmcloud.com/vulnerabilities/46645

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