cURL and libcurl 7.18.0 through 7.32.0, when built with OpenSSL, disables the certificate CN and SAN name field verification (CURLOPT_SSL_VERIFYHOST) when the digital signature verification (CURLOPT_SSL_VERIFYPEER) is disabled, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
2013-11-23T11:55:04.740
2025-04-11T00:51:21.963
Deferred
CVSSv2: 4.3 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | haxx | curl | 7.18.0 | Yes |
| Application | haxx | curl | 7.18.1 | Yes |
| Application | haxx | curl | 7.18.2 | Yes |
| Application | haxx | curl | 7.19.0 | Yes |
| Application | haxx | curl | 7.19.1 | Yes |
| Application | haxx | curl | 7.19.2 | Yes |
| Application | haxx | curl | 7.19.3 | Yes |
| Application | haxx | curl | 7.19.4 | Yes |
| Application | haxx | curl | 7.19.5 | Yes |
| Application | haxx | curl | 7.19.6 | Yes |
| Application | haxx | curl | 7.19.7 | Yes |
| Application | haxx | curl | 7.20.0 | Yes |
| Application | haxx | curl | 7.20.1 | Yes |
| Application | haxx | curl | 7.21.0 | Yes |
| Application | haxx | curl | 7.21.1 | Yes |
| Application | haxx | curl | 7.21.2 | Yes |
| Application | haxx | curl | 7.21.3 | Yes |
| Application | haxx | curl | 7.21.4 | Yes |
| Application | haxx | curl | 7.21.5 | Yes |
| Application | haxx | curl | 7.21.6 | Yes |
| Application | haxx | curl | 7.21.7 | Yes |
| Application | haxx | curl | 7.22.0 | Yes |
| Application | haxx | curl | 7.23.0 | Yes |
| Application | haxx | curl | 7.23.1 | Yes |
| Application | haxx | curl | 7.24.0 | Yes |
| Application | haxx | curl | 7.25.0 | Yes |
| Application | haxx | curl | 7.26.0 | Yes |
| Application | haxx | curl | 7.27.0 | Yes |
| Application | haxx | curl | 7.28.0 | Yes |
| Application | haxx | curl | 7.28.1 | Yes |
| Application | haxx | curl | 7.29.0 | Yes |
| Application | haxx | curl | 7.30.0 | Yes |
| Application | haxx | curl | 7.31.0 | Yes |
| Application | haxx | curl | 7.32.0 | Yes |
| Application | haxx | libcurl | 7.18.0 | Yes |
| Application | haxx | libcurl | 7.18.1 | Yes |
| Application | haxx | libcurl | 7.18.2 | Yes |
| Application | haxx | libcurl | 7.19.0 | Yes |
| Application | haxx | libcurl | 7.19.1 | Yes |
| Application | haxx | libcurl | 7.19.2 | Yes |
| Application | haxx | libcurl | 7.19.3 | Yes |
| Application | haxx | libcurl | 7.19.4 | Yes |
| Application | haxx | libcurl | 7.19.5 | Yes |
| Application | haxx | libcurl | 7.19.6 | Yes |
| Application | haxx | libcurl | 7.19.7 | Yes |
| Application | haxx | libcurl | 7.20.0 | Yes |
| Application | haxx | libcurl | 7.20.1 | Yes |
| Application | haxx | libcurl | 7.21.0 | Yes |
| Application | haxx | libcurl | 7.21.1 | Yes |
| Application | haxx | libcurl | 7.21.2 | Yes |
| Application | haxx | libcurl | 7.21.3 | Yes |
| Application | haxx | libcurl | 7.21.4 | Yes |
| Application | haxx | libcurl | 7.21.5 | Yes |
| Application | haxx | libcurl | 7.21.6 | Yes |
| Application | haxx | libcurl | 7.21.7 | Yes |
| Application | haxx | libcurl | 7.22.0 | Yes |
| Application | haxx | libcurl | 7.23.0 | Yes |
| Application | haxx | libcurl | 7.23.1 | Yes |
| Application | haxx | libcurl | 7.24.0 | Yes |
| Application | haxx | libcurl | 7.25.0 | Yes |
| Application | haxx | libcurl | 7.26.0 | Yes |
| Application | haxx | libcurl | 7.27.0 | Yes |
| Application | haxx | libcurl | 7.28.0 | Yes |
| Application | haxx | libcurl | 7.28.1 | Yes |
| Application | haxx | libcurl | 7.29.0 | Yes |
| Application | haxx | libcurl | 7.30.0 | Yes |
| Application | haxx | libcurl | 7.31.0 | Yes |
| Application | haxx | libcurl | 7.32.0 | Yes |