gsd-2016-6210
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.
Aliases
Aliases
CVE-2016-6210


To clipboard 

{
  "GSD": {
    "alias": "CVE-2016-6210",
    "description": "sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.",
    "id": "GSD-2016-6210",
    "references": [
      "https://www.suse.com/security/cve/CVE-2016-6210.html",
      "https://www.debian.org/security/2016/dsa-3626",
      "https://access.redhat.com/errata/RHSA-2017:2563",
      "https://access.redhat.com/errata/RHSA-2017:2029",
      "https://ubuntu.com/security/CVE-2016-6210",
      "https://advisories.mageia.org/CVE-2016-6210.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2016-6210.html",
      "https://linux.oracle.com/cve/CVE-2016-6210.html",
      "https://packetstormsecurity.com/files/cve/CVE-2016-6210"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2016-6210"
      ],
      "details": "sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided.",
      "id": "GSD-2016-6210",
      "modified": "2023-12-13T01:21:23.202632Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2016-6210",
        "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": "sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "RHSA-2017:2563",
            "refsource": "REDHAT",
            "url": "https://access.redhat.com/errata/RHSA-2017:2563"
          },
          {
            "name": "1036319",
            "refsource": "SECTRACK",
            "url": "http://www.securitytracker.com/id/1036319"
          },
          {
            "name": "20160714 opensshd - user enumeration",
            "refsource": "FULLDISC",
            "url": "http://seclists.org/fulldisclosure/2016/Jul/51"
          },
          {
            "name": "DSA-3626",
            "refsource": "DEBIAN",
            "url": "http://www.debian.org/security/2016/dsa-3626"
          },
          {
            "name": "40136",
            "refsource": "EXPLOIT-DB",
            "url": "https://www.exploit-db.com/exploits/40136/"
          },
          {
            "name": "40113",
            "refsource": "EXPLOIT-DB",
            "url": "https://www.exploit-db.com/exploits/40113/"
          },
          {
            "name": "https://www.openssh.com/txt/release-7.3",
            "refsource": "CONFIRM",
            "url": "https://www.openssh.com/txt/release-7.3"
          },
          {
            "name": "GLSA-201612-18",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/201612-18"
          },
          {
            "name": "RHSA-2017:2029",
            "refsource": "REDHAT",
            "url": "https://access.redhat.com/errata/RHSA-2017:2029"
          },
          {
            "name": "91812",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/91812"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20190206-0001/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20190206-0001/"
          },
          {
            "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
            "refsource": "CONFIRM",
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:openbsd:openssh:*:p2:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "7.2",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2016-6210"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by leveraging the timing difference between responses when a large password is provided."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-200"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.openssh.com/txt/release-7.3",
              "refsource": "CONFIRM",
              "tags": [
                "Release Notes",
                "Vendor Advisory"
              ],
              "url": "https://www.openssh.com/txt/release-7.3"
            },
            {
              "name": "20160714 opensshd - user enumeration",
              "refsource": "FULLDISC",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://seclists.org/fulldisclosure/2016/Jul/51"
            },
            {
              "name": "91812",
              "refsource": "BID",
              "tags": [
                "VDB Entry",
                "Third Party Advisory"
              ],
              "url": "http://www.securityfocus.com/bid/91812"
            },
            {
              "name": "GLSA-201612-18",
              "refsource": "GENTOO",
              "tags": [],
              "url": "https://security.gentoo.org/glsa/201612-18"
            },
            {
              "name": "1036319",
              "refsource": "SECTRACK",
              "tags": [],
              "url": "http://www.securitytracker.com/id/1036319"
            },
            {
              "name": "40136",
              "refsource": "EXPLOIT-DB",
              "tags": [],
              "url": "https://www.exploit-db.com/exploits/40136/"
            },
            {
              "name": "40113",
              "refsource": "EXPLOIT-DB",
              "tags": [],
              "url": "https://www.exploit-db.com/exploits/40113/"
            },
            {
              "name": "DSA-3626",
              "refsource": "DEBIAN",
              "tags": [],
              "url": "http://www.debian.org/security/2016/dsa-3626"
            },
            {
              "name": "RHSA-2017:2563",
              "refsource": "REDHAT",
              "tags": [],
              "url": "https://access.redhat.com/errata/RHSA-2017:2563"
            },
            {
              "name": "RHSA-2017:2029",
              "refsource": "REDHAT",
              "tags": [],
              "url": "https://access.redhat.com/errata/RHSA-2017:2029"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20190206-0001/",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://security.netapp.com/advisory/ntap-20190206-0001/"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "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,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.0"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-12-13T12:15Z",
      "publishedDate": "2017-02-13T17:59Z"
    }
  }
}


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