CVE-2020-14145 (GCVE-0-2020-14145)

Vulnerability from cvelistv5 – Published: 2020-06-29 17:33 – Updated: 2025-12-18 14:41
VLAI
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-18 14:41 UTC
CWE
  • n/a
  • CWE-203 - Observable Discrepancy
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T12:39:36.101Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200709-0004/"
          },
          {
            "name": "[oss-security] 20201202 Some mitigation for openssh CVE-2020-14145",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/12/02/1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://docs.ssh-mitm.at/CVE-2020-14145.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py"
          },
          {
            "name": "GLSA-202105-35",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202105-35"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2020-14145",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-18T14:41:29.925446Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-203",
                "description": "CWE-203 Observable Discrepancy",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-18T14:41:37.776Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-26T13:06:15.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200709-0004/"
        },
        {
          "name": "[oss-security] 20201202 Some mitigation for openssh CVE-2020-14145",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/12/02/1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://docs.ssh-mitm.at/CVE-2020-14145.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py"
        },
        {
          "name": "GLSA-202105-35",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202105-35"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-14145",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "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."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1",
              "refsource": "MISC",
              "url": "https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1"
            },
            {
              "name": "https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/",
              "refsource": "MISC",
              "url": "https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200709-0004/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200709-0004/"
            },
            {
              "name": "[oss-security] 20201202 Some mitigation for openssh CVE-2020-14145",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2020/12/02/1"
            },
            {
              "name": "https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d",
              "refsource": "MISC",
              "url": "https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d"
            },
            {
              "name": "https://docs.ssh-mitm.at/CVE-2020-14145.html",
              "refsource": "MISC",
              "url": "https://docs.ssh-mitm.at/CVE-2020-14145.html"
            },
            {
              "name": "https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py",
              "refsource": "MISC",
              "url": "https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py"
            },
            {
              "name": "GLSA-202105-35",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202105-35"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-14145",
    "datePublished": "2020-06-29T17:33:36.000Z",
    "dateReserved": "2020-06-15T00:00:00.000Z",
    "dateUpdated": "2025-12-18T14:41:37.776Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-14145",
      "date": "2026-08-26",
      "epss": "0.02057",
      "percentile": "0.79867"
    },
    "microsoft_vex": {
      "current_release_date": "2020-09-25T00:00:00.000Z",
      "cve": "CVE-2020-14145",
      "id": "msrc_CVE-2020-14145",
      "initial_release_date": "2020-06-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "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.",
      "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-14145.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-14145\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-06-29T18:15:11.940\",\"lastModified\":\"2025-12-18T15:15:48.410\",\"vulnStatus\":\"Modified\",\"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 filtraci\u00f3n de informaci\u00f3n en la negociaci\u00f3n del algoritmo. Esto permite a atacantes de tipo man-in-the-middle apuntar a unos intentos iniciales de conexi\u00f3n (donde ninguna clave de host para el servidor ha sido almacenada en cach\u00e9 por parte del cliente) NOTA: algunos informes afirman que las versiones 8.5 y 8.6 tambi\u00e9n est\u00e1n afectadas.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:N/A:N\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.7\",\"versionEndExcluding\":\"8.4\",\"matchCriteriaId\":\"B2452B84-EA8F-417B-90E9-9698BB2FC7AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:8.4:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"36402AC7-DE9D-4010-9C9D-2FB8B6E838A3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:8.5:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"EB4C3D47-8B47-4F0A-89D4-87D9474A99B0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openbsd:openssh:8.6:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"CB66ECE1-715A-4074-9355-E3512F7BCDBB\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netapp:aff_a700s_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"952F55C9-7E7C-4539-9D08-E736B3488569\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:netapp:aff_a700s:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9FED1B0D-F901-413A-85D9-05D4C427570D\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vmware_vsphere:*:*\",\"versionStartIncluding\":\"9.5\",\"matchCriteriaId\":\"0CB28AF5-5AF0-4475-A7B6-12E1795FFDCB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A3C19813-E823-456A-B1CE-EC0684CE1953\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7CF3019-975D-40BB-A8A4-894E62BD3797\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A6E9EF0C-AFA8-4F7B-9FDC-1E0F7C26E737\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E94F7F59-1785-493F-91A7-5F5EA5E87E4D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AD7447BC-F315-4298-A822-549942FC118B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"02DEB4FB-A21D-4CB1-B522-EEE5093E8521\"}]}]}],\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2020/12/02/1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://docs.ssh-mitm.at/CVE-2020-14145.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202105-35\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200709-0004/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/12/02/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://docs.ssh-mitm.at/CVE-2020-14145.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202105-35\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200709-0004/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-12-18T16:12:22+00:00",
      "cve": "CVE-2020-14145",
      "id": "CVE-2020-14145",
      "initial_release_date": "2020-06-29T00:00:00+00:00",
      "product_status:fixed": "138",
      "product_status:known_affected": "18",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssh: Observable discrepancy leading to an information leak in the algorithm negotiation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14145.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200709-0004/\", \"tags\": [\"x_refsource_CONFIRM\", \"x_transferred\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/12/02/1\", \"name\": \"[oss-security] 20201202 Some mitigation for openssh CVE-2020-14145\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\", \"x_transferred\"]}, {\"url\": \"https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://docs.ssh-mitm.at/CVE-2020-14145.html\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}, {\"url\": \"https://security.gentoo.org/glsa/202105-35\", \"name\": \"GLSA-202105-35\", \"tags\": [\"vendor-advisory\", \"x_refsource_GENTOO\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T12:39:36.101Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2020-14145\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-12-18T14:41:29.925446Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-203\", \"description\": \"CWE-203 Observable Discrepancy\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-12-18T14:41:12.611Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"references\": [{\"url\": \"https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200709-0004/\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/12/02/1\", \"name\": \"[oss-security] 20201202 Some mitigation for openssh CVE-2020-14145\", \"tags\": [\"mailing-list\", \"x_refsource_MLIST\"]}, {\"url\": \"https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://docs.ssh-mitm.at/CVE-2020-14145.html\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://security.gentoo.org/glsa/202105-35\", \"name\": \"GLSA-202105-35\", \"tags\": [\"vendor-advisory\", \"x_refsource_GENTOO\"]}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2021-05-26T13:06:15.000Z\"}, \"x_legacyV4Record\": {\"affects\": {\"vendor\": {\"vendor_data\": [{\"product\": {\"product_data\": [{\"version\": {\"version_data\": [{\"version_value\": \"n/a\"}]}, \"product_name\": \"n/a\"}]}, \"vendor_name\": \"n/a\"}]}}, \"data_type\": \"CVE\", \"references\": {\"reference_data\": [{\"url\": \"https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1\", \"name\": \"https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1\", \"refsource\": \"MISC\"}, {\"url\": \"https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/\", \"name\": \"https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-2-ausnutzung-eines-informationslecks-fuer-gezielte-mitm-angriffe-auf-ssh-clients/\", \"refsource\": \"MISC\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200709-0004/\", \"name\": \"https://security.netapp.com/advisory/ntap-20200709-0004/\", \"refsource\": \"CONFIRM\"}, {\"url\": \"http://www.openwall.com/lists/oss-security/2020/12/02/1\", \"name\": \"[oss-security] 20201202 Some mitigation for openssh CVE-2020-14145\", \"refsource\": \"MLIST\"}, {\"url\": \"https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d\", \"name\": \"https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d\", \"refsource\": \"MISC\"}, {\"url\": \"https://docs.ssh-mitm.at/CVE-2020-14145.html\", \"name\": \"https://docs.ssh-mitm.at/CVE-2020-14145.html\", \"refsource\": \"MISC\"}, {\"url\": \"https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py\", \"name\": \"https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py\", \"refsource\": \"MISC\"}, {\"url\": \"https://security.gentoo.org/glsa/202105-35\", \"name\": \"GLSA-202105-35\", \"refsource\": \"GENTOO\"}]}, \"data_format\": \"MITRE\", \"description\": {\"description_data\": [{\"lang\": \"eng\", \"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.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"n/a\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2020-14145\", \"STATE\": \"PUBLIC\", \"ASSIGNER\": \"cve@mitre.org\"}}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2020-14145\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-18T14:41:37.776Z\", \"dateReserved\": \"2020-06-15T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2020-06-29T17:33:36.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.