Arbitrary SSL Server Spoofing via Crafted X.509 Certificate

CVE-2013-4248 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

The openssl_x509_parse function in openssl.c in the OpenSSL module in PHP before 5.4.18 and 5.5.x before 5.5.2 does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

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