gsd-2017-7562
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.
Aliases
Aliases
CVE-2017-7562


To clipboard 

{
  "GSD": {
    "alias": "CVE-2017-7562",
    "description": "An authentication bypass flaw was found in the way krb5\u0027s certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.",
    "id": "GSD-2017-7562",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-7562.html",
      "https://access.redhat.com/errata/RHSA-2018:0666",
      "https://advisories.mageia.org/CVE-2017-7562.html",
      "https://alas.aws.amazon.com/cve/html/CVE-2017-7562.html",
      "https://linux.oracle.com/cve/CVE-2017-7562.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-7562"
      ],
      "details": "An authentication bypass flaw was found in the way krb5\u0027s certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.",
      "id": "GSD-2017-7562",
      "modified": "2023-12-13T01:21:06.673883Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ASSIGNER": "secalert@redhat.com",
        "ID": "CVE-2017-7562",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "krb5",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "1.16.1"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "MIT"
            }
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          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.0"
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      },
      "problemtype": {
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          {
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              {
                "cweId": "CWE-287",
                "lang": "eng",
                "value": "CWE-287"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "http://www.securityfocus.com/bid/100511",
            "refsource": "MISC",
            "url": "http://www.securityfocus.com/bid/100511"
          },
          {
            "name": "https://access.redhat.com/errata/RHSA-2018:0666",
            "refsource": "MISC",
            "url": "https://access.redhat.com/errata/RHSA-2018:0666"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7562"
          },
          {
            "name": "https://github.com/krb5/krb5/pull/694",
            "refsource": "MISC",
            "url": "https://github.com/krb5/krb5/pull/694"
          },
          {
            "name": "https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196",
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          },
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          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
          {
            "children": [],
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                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*",
                "cpe_name": [],
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              },
              {
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                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*",
                "cpe_name": [],
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            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.16.1",
                "versionStartIncluding": "1.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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        },
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
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                  "lang": "en",
                  "value": "CWE-287"
                },
                {
                  "lang": "en",
                  "value": "CWE-295"
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              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d",
              "refsource": "CONFIRM",
              "tags": [
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              "url": "https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d"
            },
            {
              "name": "https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2",
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            },
            {
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              ],
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            },
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                "VDB Entry"
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              "url": "http://www.securityfocus.com/bid/100511"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2023-02-12T23:31Z",
      "publishedDate": "2018-07-26T15:29Z"
    }
  }
}


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