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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.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 8.1 HIGH

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

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	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Modified Analysis by NIST 1/30/2023 12:33:01 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 819 characters. View Entire Change Record OR cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-::::::: cpe:2.3:a:netapp:data_ontap_edge:-::::::: cpe:2.3:a:netapp:host_agent:-::::::: cpe:2.3:a:netapp:oncommand_shift:-::::::: cpe:2.3:a:netapp:plug-in_for_symantec_netbackup:-::::::: cpe:2.3:a:netapp:smi-s_provider:-::::::: cpe:2.3:a:netapp:snap_creator_framework:-::::::: cpe:2.3:a:netapp:snapdrive:-:::::unix::* *cpe:2.3:a:net
Changed	CPE Configuration	OR cpe:2.3:a:apple:safari::::::::* cpe:2.3:a:google:chrome::::::::* cpe:2.3:a:microsoft:internet_explorer::::::::* cpe:2.3:a:mozilla:firefox::::::::* cpe:2.3:a:opera:opera::::::::*	AND OR cpe:2.3:a:ietf:transport_layer_security::::::::* versions up to (including) 1.2 OR cpe:2.3:a:apple:safari:-:::::::* cpe:2.3:a:google:chrome:-:::::::* cpe:2.3:a:microsoft:internet_explorer:-:::::::* cpe:2.3:a:mozilla:firefox:-:::::::* cpe:2.3:a:opera:opera_browser:-:::::::*
Removed	CVSS V3	NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CVSS V3.1		NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-295
Removed	CWE	NIST CWE-310
Changed	Reference Type	http://twitter.com/matthew_d_green/statuses/630908726950674433 Press/Media Coverage	http://twitter.com/matthew_d_green/statuses/630908726950674433 Press/Media Coverage, Technical Description, Third Party Advisory
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/09/20/4 Mailing List, Third Party Advisory	http://www.openwall.com/lists/oss-security/2016/09/20/4 Mailing List, Technical Description, Third Party Advisory
Changed	Reference Type	http://www.securityfocus.com/bid/93071 No Types Assigned	http://www.securityfocus.com/bid/93071 Broken Link, Third Party Advisory, VDB Entry
Changed	Reference Type	https://kcitls.org Technical Description	https://kcitls.org Exploit, Technical Description
Changed	Reference Type	https://security.netapp.com/advisory/ntap-20180626-0002/ No Types Assigned	https://security.netapp.com/advisory/ntap-20180626-0002/ Third Party Advisory
Changed	Reference Type	https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf Technical Description	https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf Exploit, Mitigation, Technical Description

Modified Analysis by NIST 9/21/2016 3:03:14 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Configuration 1 OR cpe:2.3:a:google:chrome::::::::* cpe:2.3:a:mozilla:firefox::::::::* cpe:2.3:a:microsoft:internet_explorer::::::::* cpe:2.3:a:opera:opera::::::::* cpe:2.3:a:apple:safari::::::::*
Added	CVSS V2		(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added	CVSS V3		AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CWE		CWE-310
Changed	Reference Type	http://twitter.com/matthew_d_green/statuses/630908726950674433 No Types Assigned	http://twitter.com/matthew_d_green/statuses/630908726950674433 Press/Media Coverage
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2016/09/20/4 No Types Assigned	http://www.openwall.com/lists/oss-security/2016/09/20/4 Third Party Advisory, Mailing List
Changed	Reference Type	https://kcitls.org No Types Assigned	https://kcitls.org Technical Description
Changed	Reference Type	https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf No Types Assigned	https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdf Technical Description

Quick Info

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

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