FKIE_CVE-2015-8960

Vulnerability from fkie_nvd - Published: 2016-09-21 02:59 - Updated: 2025-04-12 10:46
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
secalert@redhat.comhttp://twitter.com/matthew_d_green/statuses/630908726950674433Press/Media Coverage, Technical Description, Third Party Advisory
secalert@redhat.comhttp://www.openwall.com/lists/oss-security/2016/09/20/4Mailing List, Technical Description, Third Party Advisory
secalert@redhat.comhttp://www.securityfocus.com/bid/93071Broken Link, Third Party Advisory, VDB Entry
secalert@redhat.comhttps://kcitls.orgExploit, Technical Description
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20180626-0002/Third Party Advisory
secalert@redhat.comhttps://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdfExploit, Mitigation, Technical Description
af854a3a-2127-422b-91ae-364da2661108http://twitter.com/matthew_d_green/statuses/630908726950674433Press/Media Coverage, Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/09/20/4Mailing List, Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/93071Broken Link, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://kcitls.orgExploit, Technical Description
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20180626-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.usenix.org/system/files/conference/woot15/woot15-paper-hlauschek.pdfExploit, Mitigation, Technical Description
Impacted products
Vendor Product Version
ietf transport_layer_security *
apple safari -
google chrome -
microsoft internet_explorer -
mozilla firefox -
opera opera_browser -
netapp clustered_data_ontap_antivirus_connector -
netapp data_ontap_edge -
netapp host_agent -
netapp oncommand_shift -
netapp plug-in_for_symantec_netbackup -
netapp smi-s_provider -
netapp snap_creator_framework -
netapp snapdrive -
netapp snapdrive -
netapp snapmanager -
netapp snapmanager -
netapp snapprotect -
netapp solidfire_\&_hci_management_node -
netapp system_setup -
To clipboard 

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      "value": "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."
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      "value": "El protocolo TLS 1.2 y versiones anteriores soporta los valores rsa_fixed_dh, dss_fixed_dh, rsa_fixed_ecdh y ecdsa_fixed_ecdh para ClientCertificateType pero no documenta directamente la habilidad para computar el secreto maestro en determinadas situaciones con una clave de cliente secreta y una clave p\u00fablica de servidor pero no una clave secreta de servidor, lo que facilita a atacantes man-in-the-middle suplantar servidores TLS aprovechando el conocimiento de la clave secreta para un certificado cliente X.509 arbitrariamente instalado, tambi\u00e9n conocido como problema \"Key Compromise Impersonation (KCI)\"."
    }
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  "id": "CVE-2015-8960",
  "lastModified": "2025-04-12T10:46:40.837",
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  "published": "2016-09-21T02:59:00.133",
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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.