Description

The darwinssl_connect_step1 function in lib/vtls/curl_darwinssl.c in libcurl 7.31.0 through 7.39.0, when using the DarwinSSL (aka SecureTransport) back-end for TLS, does not check if a cached TLS session validated the certificate when reusing the session, which allows man-in-the-middle attackers to spoof servers via a crafted certificate.

References

http://curl.haxx.se/docs/adv_20150108A.html

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10743

http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html

http://secunia.com/advisories/61925

https://security.gentoo.org/glsa/201701-47

https://support.apple.com/kb/HT205031

Details

Risk Information

CVSS v2