GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2018-15473 (GCVE-0-2018-15473)

Vulnerability from cvelistv5 – Published: 2018-08-17 00:00 – Updated: 2025-12-17 21:22
VLAI Previdian
Summary
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c.
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: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-17 21:22 UTC
CWE
  • n/a
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Date Public
2018-08-17 00:00
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 1552e90f-e6b1-4c7f-8bc7-7e0253f472d9

Vulnerability ID: CVE-2018-15473

Status: Confirmed

Status Updated: 2026-04-15 14:28 UTC

Exploited: Yes

Timestamps
First Seen: 2026-04-15
Asserted: 2026-04-15
Scope
Notes: KEVIntel entry: OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the... | Affected: OpenSSH / OpenSSH | CVSS: 5.3 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the...
Vendor OpenSSH
Product OpenSSH
Added Date 2026-04-15T14:28:36.590Z
Cvss Score 5.3
Epss Score None
Cvss Severity MEDIUM
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-06-19 12:42 UTC | Updated: 2026-06-19 12:42 UTC
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T09:54:03.508Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "GLSA-201810-03",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201810-03"
          },
          {
            "name": "1041487",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1041487"
          },
          {
            "name": "45233",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/45233/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugs.debian.org/906236"
          },
          {
            "name": "45210",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/45210/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20181101-0001/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0"
          },
          {
            "name": "USN-3809-1",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3809-1/"
          },
          {
            "name": "[debian-lts-announce] 20180821 [SECURITY] [DLA-1474-1] openssh security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html"
          },
          {
            "name": "105140",
            "tags": [
              "vdb-entry",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/105140"
          },
          {
            "name": "DSA-4280",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2018/dsa-4280"
          },
          {
            "name": "45939",
            "tags": [
              "exploit",
              "x_transferred"
            ],
            "url": "https://www.exploit-db.com/exploits/45939/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2018/08/15/5"
          },
          {
            "name": "RHSA-2019:0711",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:0711"
          },
          {
            "name": "RHSA-2019:2143",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2143"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          }
        ],
        "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-2018-15473",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-17T21:22:43.940038Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-362",
                "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-17T21:22:47.283Z",
          "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"
            }
          ]
        }
      ],
      "datePublic": "2018-08-17T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-13T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "GLSA-201810-03",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/201810-03"
        },
        {
          "name": "1041487",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securitytracker.com/id/1041487"
        },
        {
          "name": "45233",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/45233/"
        },
        {
          "url": "https://bugs.debian.org/906236"
        },
        {
          "name": "45210",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/45210/"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20181101-0001/"
        },
        {
          "url": "https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0"
        },
        {
          "name": "USN-3809-1",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://usn.ubuntu.com/3809-1/"
        },
        {
          "name": "[debian-lts-announce] 20180821 [SECURITY] [DLA-1474-1] openssh security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html"
        },
        {
          "name": "105140",
          "tags": [
            "vdb-entry"
          ],
          "url": "http://www.securityfocus.com/bid/105140"
        },
        {
          "name": "DSA-4280",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2018/dsa-4280"
        },
        {
          "name": "45939",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/45939/"
        },
        {
          "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2018/08/15/5"
        },
        {
          "name": "RHSA-2019:0711",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2019:0711"
        },
        {
          "name": "RHSA-2019:2143",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2019:2143"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-15473",
    "datePublished": "2018-08-17T00:00:00.000Z",
    "dateReserved": "2018-08-17T00:00:00.000Z",
    "dateUpdated": "2025-12-17T21:22:47.283Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2018-15473",
      "date": "2026-09-20",
      "epss": "0.98631",
      "percentile": "0.99922"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FC6DE0EB-7AC6-47A3-9759-43FFF9268312",
                    "versionEndIncluding": "7.7",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EE249E1B-A1FD-4E08-AA71-A0E1F10FFE97",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9BBCD86A-E6C7-4444-9D74-F861084090F0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E5ED5807-55B7-47C5-97A6-03233F4FBC3A",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "825ECE2D-E232-46E0-A047-074B34DB1E97",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
                    "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                    "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                    "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EB30733E-68FC-49C4-86C0-7FEE75C366BF",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6361DAC6-600F-4B15-8797-D67F298F46FB",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:netapp:aff_baseboard_management_controller:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5C0ADE5D-F91D-4E0D-B6C5-3511B19665F1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5C2089EE-5D7F-47EC-8EA5-0F69790564C4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:data_ontap_edge:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E0C4B1E5-75BF-43AE-BBAC-0DD4124C71ED",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:fas_baseboard_management_controller:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6DD5AF44-1C16-4F25-84C1-8AE3CD89B7B1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:oncommand_unified_manager:*:*:*:*:*:vsphere:*:*",
                    "matchCriteriaId": "7E49ACFC-FD48-4ED7-86E8-68B5B753852C",
                    "versionStartIncluding": "9.4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:ontap_select_deploy:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7E968916-8CE0-4165-851F-14E37ECEA948",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:service_processor:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "146A767F-DC04-454B-9913-17D3A2B5AAA4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E94F7F59-1785-493F-91A7-5F5EA5E87E4D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:netapp:virtual_storage_console:*:*:*:*:*:vsphere:*:*",
                    "matchCriteriaId": "066C2961-E9C4-418E-82AF-1A7C35D5C085",
                    "versionStartIncluding": "7.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1FED6CAE-D97F-49E0-9D00-1642A3A427B4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:netapp:data_ontap:-:*:*:*:*:7-mode:*:*",
                    "matchCriteriaId": "392A1364-2739-450D-9E19-DFF93081C2C6",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:netapp:vasa_provider:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B65B11A5-728E-4952-824E-051DFC00259B",
                    "versionStartIncluding": "7.2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1FED6CAE-D97F-49E0-9D00-1642A3A427B4",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:netapp:storage_replication_adapter:*:*:*:*:*:vsphere:*:*",
                    "matchCriteriaId": "5717C329-984A-4A42-8FA6-7B4CF1D6F2D3",
                    "versionStartIncluding": "7.2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1FED6CAE-D97F-49E0-9D00-1642A3A427B4",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:oracle:sun_zfs_storage_appliance_kit:8.8.6:*:*:*:*:*:*:*",
                    "matchCriteriaId": "517A2282-C254-49EB-A52D-FC2B45E70ADD",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:siemens:scalance_x204rna_firmware:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0D3A0312-1249-4257-98F1-57E8959989C5",
                    "versionEndExcluding": "3.2.7",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:siemens:scalance_x204rna:-:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EA8B483F-0FD2-49F8-A86A-672A6E007949",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c."
          },
          {
            "lang": "es",
            "value": "OpenSSH hasta la versi\u00f3n 7.7 es propenso a una vulnerabilidad de enumeraci\u00f3n de usuarios debido a que no retrasa el rescate de un usuario de autenticaci\u00f3n no v\u00e1lido hasta que el paquete que contiene la petici\u00f3n haya sido analizado completamente. Esto est\u00e1 relacionado con auth2-gss.c, auth2-hostbased.c, y auth2-pubkey.c."
          }
        ],
        "id": "CVE-2018-15473",
        "lastModified": "2025-12-17T22:15:54.557",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 1.4,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ]
        },
        "published": "2018-08-17T19:29:00.223",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2018/08/15/5"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Broken Link",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/105140"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Broken Link",
              "Patch",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securitytracker.com/id/1041487"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:0711"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2143"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Issue Tracking",
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://bugs.debian.org/906236"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/201810-03"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20181101-0001/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://usn.ubuntu.com/3809-1/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2018/dsa-4280"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/45210/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/45233/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/45939/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2018/08/15/5"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Broken Link",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/105140"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Broken Link",
              "Patch",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securitytracker.com/id/1041487"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:0711"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2143"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Issue Tracking",
              "Mailing List",
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://bugs.debian.org/906236"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch"
            ],
            "url": "https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/201810-03"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20181101-0001/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://usn.ubuntu.com/3809-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2018/dsa-4280"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/45210/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/45233/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/45939/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-12-18T01:10:03+00:00",
      "cve": "CVE-2018-15473",
      "id": "CVE-2018-15473",
      "initial_release_date": "2018-08-16T00:00:00+00:00",
      "product_status:fixed": "640",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssh: User enumeration via malformed packets in authentication requests",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-15473.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2024-08-05T09:54:03.508Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "name": "GLSA-201810-03",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://security.gentoo.org/glsa/201810-03"
              },
              {
                "name": "1041487",
                "tags": [
                  "vdb-entry",
                  "x_transferred"
                ],
                "url": "http://www.securitytracker.com/id/1041487"
              },
              {
                "name": "45233",
                "tags": [
                  "exploit",
                  "x_transferred"
                ],
                "url": "https://www.exploit-db.com/exploits/45233/"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://bugs.debian.org/906236"
              },
              {
                "name": "45210",
                "tags": [
                  "exploit",
                  "x_transferred"
                ],
                "url": "https://www.exploit-db.com/exploits/45210/"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://security.netapp.com/advisory/ntap-20181101-0001/"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0"
              },
              {
                "name": "USN-3809-1",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://usn.ubuntu.com/3809-1/"
              },
              {
                "name": "[debian-lts-announce] 20180821 [SECURITY] [DLA-1474-1] openssh security update",
                "tags": [
                  "mailing-list",
                  "x_transferred"
                ],
                "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html"
              },
              {
                "name": "105140",
                "tags": [
                  "vdb-entry",
                  "x_transferred"
                ],
                "url": "http://www.securityfocus.com/bid/105140"
              },
              {
                "name": "DSA-4280",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://www.debian.org/security/2018/dsa-4280"
              },
              {
                "name": "45939",
                "tags": [
                  "exploit",
                  "x_transferred"
                ],
                "url": "https://www.exploit-db.com/exploits/45939/"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "http://www.openwall.com/lists/oss-security/2018/08/15/5"
              },
              {
                "name": "RHSA-2019:0711",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2019:0711"
              },
              {
                "name": "RHSA-2019:2143",
                "tags": [
                  "vendor-advisory",
                  "x_transferred"
                ],
                "url": "https://access.redhat.com/errata/RHSA-2019:2143"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
              },
              {
                "tags": [
                  "x_transferred"
                ],
                "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
              }
            ],
            "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-2018-15473",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-12-17T21:22:43.940038Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-362",
                    "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-12-17T21:22:38.624Z",
              "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"
                }
              ]
            }
          ],
          "datePublic": "2018-08-17T00:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "n/a",
                  "lang": "en",
                  "type": "text"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2022-12-13T00:00:00.000Z",
            "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
            "shortName": "mitre"
          },
          "references": [
            {
              "name": "GLSA-201810-03",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://security.gentoo.org/glsa/201810-03"
            },
            {
              "name": "1041487",
              "tags": [
                "vdb-entry"
              ],
              "url": "http://www.securitytracker.com/id/1041487"
            },
            {
              "name": "45233",
              "tags": [
                "exploit"
              ],
              "url": "https://www.exploit-db.com/exploits/45233/"
            },
            {
              "url": "https://bugs.debian.org/906236"
            },
            {
              "name": "45210",
              "tags": [
                "exploit"
              ],
              "url": "https://www.exploit-db.com/exploits/45210/"
            },
            {
              "url": "https://security.netapp.com/advisory/ntap-20181101-0001/"
            },
            {
              "url": "https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0"
            },
            {
              "name": "USN-3809-1",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://usn.ubuntu.com/3809-1/"
            },
            {
              "name": "[debian-lts-announce] 20180821 [SECURITY] [DLA-1474-1] openssh security update",
              "tags": [
                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html"
            },
            {
              "name": "105140",
              "tags": [
                "vdb-entry"
              ],
              "url": "http://www.securityfocus.com/bid/105140"
            },
            {
              "name": "DSA-4280",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.debian.org/security/2018/dsa-4280"
            },
            {
              "name": "45939",
              "tags": [
                "exploit"
              ],
              "url": "https://www.exploit-db.com/exploits/45939/"
            },
            {
              "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011"
            },
            {
              "url": "http://www.openwall.com/lists/oss-security/2018/08/15/5"
            },
            {
              "name": "RHSA-2019:0711",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2019:0711"
            },
            {
              "name": "RHSA-2019:2143",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://access.redhat.com/errata/RHSA-2019:2143"
            },
            {
              "url": "https://www.oracle.com/security-alerts/cpujan2020.html"
            },
            {
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "assignerShortName": "mitre",
        "cveId": "CVE-2018-15473",
        "datePublished": "2018-08-17T00:00:00.000Z",
        "dateReserved": "2018-08-17T00:00:00.000Z",
        "dateUpdated": "2025-12-17T21:22:47.283Z",
        "state": "PUBLISHED"
      },
      "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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.