CVE-2015-8960 | BDVDB-2026-78186 Detail
Description#
The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_dh, rsa_fixed_ecdh, and ecdsa_fixed_ecdh values for ClientCertificateType but does not directly document the ability to compute the master secret in certain situations with a client secret key and server public key but not a server secret key, which makes it easier for man-in-the-middle attackers to spoof TLS servers by leveraging knowledge of the secret key for an arbitrary installed client X.509 certificate, aka the "Key Compromise Impersonation (KCI)" issue.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- http://www.openwall.com/lists/oss-security/2016/09/20/4
- http://twitter.com/matthew_d_green/statuses/630908726950674433
- http://www.securityfocus.com/bid/93071
- https://security.netapp.com/advisory/ntap-20180626-0002/
- https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf
- https://kcitls.org
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.