Home/CVE/curl and libcurl 7.27.0 through 7.35.0, when running on Windows and using the SChannel/Winssl TLS backend, does not veri
CVE

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 veri

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.

MEDIUM · CVSS 4 EPSS 0.00245
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules15 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

2
haxx curlall versions
haxx libcurlall versions
◈

Sigma Hunt Rules

15
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Download and Execute Pattern via Curl/Wget
producthighSuspicious File Download From File Sharing Domain Via Curl.EXE
producthighSuspicious File Download From IP Via Curl.EXE
producthighCurl Download And Execute Combination
producthighSuspicious Curl.EXE Download
productmediumSuspicious Curl File Upload - Linux
▣

Scoring & Timeline

4
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:H/Au:N/C:P/I:P/A:N
Published to NVD18 Apr 2014 · 10:14 PM
🔗

References & Sources

12
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://curl.haxx.se/docs/adv_20140326D.htmlPatchVendor Advisory
http://seclists.org/oss-sec/2014/q1/585
http://seclists.org/oss-sec/2014/q1/586
http://secunia.com/advisories/57836Vendor Advisory
http://secunia.com/advisories/57966Vendor Advisory
http://secunia.com/advisories/57968Vendor Advisory
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