The SSLClientSocketNSS::Core::OwnAuthCertHandler function in net/socket/ssl_client_socket_nss.cc in Google Chrome before 33.0.1750.117 does not prevent changes to server X.509 certificates during renegotiations, which allows remote SSL servers to trigger use of a new certificate chain, inconsistent with the user's expectations, by initiating a TLS renegotiation.
CVSS Severity (version 2.0):
Impact Subscore: 4.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification
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