fkie_cve-2020-14145
Vulnerability from fkie_nvd
Published
2020-06-29 18:15
Modified
2024-11-21 05:02
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/12/02/1Mailing List, Patch, Third Party Advisory
cve@mitre.orghttps://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362dPatch, Third Party Advisory
cve@mitre.orghttps://docs.ssh-mitm.at/CVE-2020-14145.htmlThird Party Advisory
cve@mitre.orghttps://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1Patch, Third Party Advisory
cve@mitre.orghttps://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.pyThird Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202105-35Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20200709-0004/Third Party Advisory
cve@mitre.orghttps://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/12/02/1Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362dPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://docs.ssh-mitm.at/CVE-2020-14145.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.pyThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202105-35Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200709-0004/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/Third Party Advisory
Impacted products
Vendor Product Version
openbsd openssh *
openbsd openssh 8.4
openbsd openssh 8.5
openbsd openssh 8.6
netapp aff_a700s_firmware -
netapp aff_a700s -
netapp active_iq_unified_manager *
netapp hci_management_node -
netapp ontap_select_deploy_administration_utility -
netapp solidfire -
netapp steelstore_cloud_integrated_storage -
netapp hci_compute_node -
netapp hci_storage_node -


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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.",
      },
      {
         lang: "es",
         value: "El lado del cliente en OpenSSH versiones 5.7 hasta 8.4, presenta una Discrepancia Observable que conlleva a una filtración de información en la negociación del algoritmo. Esto permite a atacantes de tipo man-in-the-middle apuntar a unos intentos iniciales de conexión (donde ninguna clave de host para el servidor ha sido almacenada en caché por parte del cliente) NOTA: algunos informes afirman que las versiones 8.5 y 8.6 también están afectadas.",
      },
   ],
   id: "CVE-2020-14145",
   lastModified: "2024-11-21T05:02:44.080",
   metrics: {
      cvssMetricV2: [
         {
            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
               accessComplexity: "MEDIUM",
               accessVector: "NETWORK",
               authentication: "NONE",
               availabilityImpact: "NONE",
               baseScore: 4.3,
               confidentialityImpact: "PARTIAL",
               integrityImpact: "NONE",
               vectorString: "AV:N/AC:M/Au:N/C:P/I:N/A:N",
               version: "2.0",
            },
            exploitabilityScore: 8.6,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
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            source: "nvd@nist.gov",
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               confidentialityImpact: "HIGH",
               integrityImpact: "NONE",
               privilegesRequired: "NONE",
               scope: "UNCHANGED",
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            impactScore: 3.6,
            source: "nvd@nist.gov",
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   },
   published: "2020-06-29T18:15:11.940",
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         source: "cve@mitre.org",
         tags: [
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      {
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         url: "https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/",
      },
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   ],
   sourceIdentifier: "cve@mitre.org",
   vulnStatus: "Modified",
   weaknesses: [
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            {
               lang: "en",
               value: "CWE-203",
            },
         ],
         source: "nvd@nist.gov",
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   ],
}


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