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CVE-2015-8960 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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://twitter.com/matthew_d_green/statuses/630908726950674433 Press/Media Coverage  Technical Description  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2016/09/20/4 Mailing List  Technical Description  Third Party Advisory 
http://www.securityfocus.com/bid/93071 Broken Link  Third Party Advisory  VDB Entry 
https://kcitls.org Exploit  Technical Description 
https://security.netapp.com/advisory/ntap-20180626-0002/ Third Party Advisory 
https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf Exploit  Mitigation  Technical Description 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-295 Improper Certificate Validation cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-8960
NVD Published Date:
09/20/2016
NVD Last Modified:
01/30/2023
Source:
Red Hat, Inc.