CVE-2014-2522: Input Validation
First published: Fri Apr 18 2014(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| curl | =7.27.0 | |
| curl | =7.28.0 | |
| curl | =7.28.1 | |
| curl | =7.29.0 | |
| curl | =7.30.0 | |
| curl | =7.31.0 | |
| curl | =7.32.0 | |
| curl | =7.33.0 | |
| curl | =7.34.0 | |
| curl | =7.35.0 | |
| libcurl | =7.27.0 | |
| libcurl | =7.28.0 | |
| libcurl | =7.28.1 | |
| libcurl | =7.29.0 | |
| libcurl | =7.30.0 | |
| libcurl | =7.31.0 | |
| libcurl | =7.32.0 | |
| libcurl | =7.33.0 | |
| libcurl | =7.34.0 | |
| libcurl | =7.35.0 | |
| libcurl | =7.36.0 | |
| Microsoft Windows |
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Reference Links
- http://curl.haxx.se/docs/adv_20140326D.html
- http://seclists.org/oss-sec/2014/q1/585
- http://seclists.org/oss-sec/2014/q1/586
- http://secunia.com/advisories/57836
- http://secunia.com/advisories/57966
- http://secunia.com/advisories/57968
- http://secunia.com/advisories/59458
- http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5095862
- http://www.getchef.com/blog/2014/04/09/chef-server-11-0-12-release/
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-1-4-9-release/
- http://www.getchef.com/blog/2014/04/09/enterprise-chef-11-1-3-release/
- http://www.securityfocus.com/bid/66296
Frequently Asked Questions
What is the severity of CVE-2014-2522?
CVE-2014-2522 has a medium severity rating as it affects the verification of server certificates which could allow man-in-the-middle attacks.
How do I fix CVE-2014-2522?
To fix CVE-2014-2522, update curl or libcurl to versions 7.36.0 or later where the hostname verification issue is resolved.
Which versions are affected by CVE-2014-2522?
CVE-2014-2522 affects curl and libcurl versions 7.27.0 through 7.35.0 that use the SChannel/Winssl TLS backend on Windows.
What types of attacks can CVE-2014-2522 allow?
CVE-2014-2522 can allow attackers to perform man-in-the-middle attacks by exploiting the lack of hostname verification.
Is CVE-2014-2522 present on all operating systems?
CVE-2014-2522 specifically affects curl or libcurl when running on Windows with the SChannel/Winssl TLS backend.
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/remedy
- agent/author
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/haxx
- canonical/curl
- version/curl/7.27.0
- version/curl/7.28.0
- version/curl/7.28.1
- version/curl/7.29.0
- version/curl/7.30.0
- version/curl/7.31.0
- version/curl/7.32.0
- version/curl/7.33.0
- version/curl/7.34.0
- version/curl/7.35.0
- canonical/libcurl
- version/libcurl/7.27.0
- version/libcurl/7.28.0
- version/libcurl/7.28.1
- version/libcurl/7.29.0
- version/libcurl/7.30.0
- version/libcurl/7.31.0
- version/libcurl/7.32.0
- version/libcurl/7.33.0
- version/libcurl/7.34.0
- version/libcurl/7.35.0
- version/libcurl/7.36.0
- vendor/microsoft
- canonical/microsoft windows