What’s Vulnerable › Vulnerabilities

CVE-2002-1623

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 48.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2002-12-31 · updated 2026-06-16

Description

The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by (1) monitoring responses before the password is supplied or (2) sniffing, as originally reported for FireWall-1 SecuRemote.

Affected products

• checkpoint Vpn-1 Firewall-1: 4.0, 4.1

References

• http://lists.grok.org.uk/pipermail/full-disclosure/2002-September/001223.html
• http://marc.info/?l=bugtraq&m=103124812629621&w=2
• http://marc.info/?l=bugtraq&m=103176164729351&w=2
• http://www.checkpoint.com/techsupport/alerts/ike.html
• http://www.kb.cert.org/vuls/id/886601
• http://www.nta-monitor.com/news/checkpoint.htm
• http://www.securiteam.com/securitynews/5TP040U8AW.html
• http://www.securityfocus.com/archive/1/290202
• http://www.securityfocus.com/bid/5607
• https://exchange.xforce.ibmcloud.com/vulnerabilities/10034
• http://lists.grok.org.uk/pipermail/full-disclosure/2002-September/001223.html
• http://marc.info/?l=bugtraq&m=103124812629621&w=2

Get alerted when CVE-2002-1623 or the next vulnerability affects your stack