The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_dh,...
Vulnerability 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 Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2015-8960
Credits & Attribution
No credits recorded in the NVD database.
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
More from ietf
View All →Affected Vendor
ietf
View all reports →Affected Software
Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.