Vulnerability: SSL Certificate Spoofing via NUL Byte in Common Name Field

CVE-2014-3504 · MEDIUM Severity

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

The (1) serf_ssl_cert_issuer, (2) serf_ssl_cert_subject, and (3) serf_ssl_cert_certificate functions in Serf 0.2.0 through 1.3.x before 1.3.7 does not properly handle a NUL byte in a domain name in the subject's Common Name (CN) 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.

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