gsd-2020-26160
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m["aud"] (which is allowed by the specification). Because the type assertion fails, "" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.
Aliases
Aliases
CVE-2020-26160


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-26160",
    "description": "jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m[\"aud\"] (which is allowed by the specification). Because the type assertion fails, \"\" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.",
    "id": "GSD-2020-26160",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-26160.html",
      "https://access.redhat.com/errata/RHSA-2021:5110",
      "https://access.redhat.com/errata/RHSA-2021:2438",
      "https://access.redhat.com/errata/RHSA-2021:2042",
      "https://access.redhat.com/errata/RHSA-2021:2041",
      "https://access.redhat.com/errata/RHSA-2021:0799",
      "https://access.redhat.com/errata/RHSA-2021:0516",
      "https://access.redhat.com/errata/RHSA-2020:5633"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26160"
      ],
      "details": "jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m[\"aud\"] (which is allowed by the specification). Because the type assertion fails, \"\" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.",
      "id": "GSD-2020-26160",
      "modified": "2023-12-13T01:22:08.690815Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-26160",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m[\"aud\"] (which is allowed by the specification). Because the type assertion fails, \"\" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AC:L/AV:N/A:N/C:H/I:N/PR:N/S:U/UI:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
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        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/dgrijalva/jwt-go/pull/426",
            "refsource": "MISC",
            "url": "https://github.com/dgrijalva/jwt-go/pull/426"
          },
          {
            "name": "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515",
            "refsource": "MISC",
            "url": "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c=v3.2.0",
          "affected_versions": "All versions up to 3.2.0",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-862",
            "CWE-937"
          ],
          "date": "2021-07-21",
          "description": "jwt-go allows attackers to bypass intended access restrictions in situations with `[]string{}` for `m[\"aud\"]` (which is allowed by the specification). Because the type assertion fails, \"\" is the value of `aud`. This is a security problem if the JWT token is presented to a service that lacks its own audience check.",
          "fixed_versions": [],
          "identifier": "CVE-2020-26160",
          "identifiers": [
            "CVE-2020-26160"
          ],
          "not_impacted": "",
          "package_slug": "go/github.com/dgrijalva/jwt-go",
          "pubdate": "2020-09-30",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "Missing Authorization",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26160"
          ],
          "uuid": "1d97ce90-c7a5-455c-ac06-f7976da3cbc9",
          "versions": [
            {
              "commit": {
                "sha": "06ea1031745cb8b3dab3f6a236daf2b0aa468b7e",
                "tags": [
                  "v3.2.0"
                ],
                "timestamp": "20180308231308"
              },
              "number": "v3.2.0"
            }
          ]
        },
        {
          "affected_range": "\u003cv4.0.0-preiew1",
          "affected_versions": "All versions before 4.0.0-preview1",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-287",
            "CWE-755",
            "CWE-937"
          ],
          "date": "2023-02-07",
          "description": "jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m[\"aud\"] (which is allowed by the specification). Because the type assertion fails, \"\" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check.",
          "fixed_versions": [
            "v4.0.0-preiew1"
          ],
          "identifier": "CVE-2020-26160",
          "identifiers": [
            "GHSA-w73w-5m7g-f7qc",
            "CVE-2020-26160"
          ],
          "not_impacted": "All versions starting from 4.0.0-preview1",
          "package_slug": "go/github.com/dgrijalva/jwt-go/v4",
          "pubdate": "2021-05-18",
          "solution": "Upgrade to version 4.0.0-preview1 or above.",
          "title": "Improper Handling of Exceptional Conditions",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-26160",
            "https://github.com/dgrijalva/jwt-go/issues/422",
            "https://github.com/dgrijalva/jwt-go/pull/426",
            "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515",
            "https://github.com/dgrijalva/jwt-go/issues/462",
            "https://github.com/dgrijalva/jwt-go/commit/ec0a89a131e3e8567adcb21254a5cd20a70ea4ab",
            "https://pkg.go.dev/vuln/GO-2020-0017",
            "https://github.com/advisories/GHSA-w73w-5m7g-f7qc"
          ],
          "uuid": "4c5668a8-7038-4796-8a80-d1000e0c037b",
          "versions": []
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:jwt-go_project:jwt-go:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.2.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-26160"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "jwt-go before 4.0.0-preview1 allows attackers to bypass intended access restrictions in situations with []string{} for m[\"aud\"] (which is allowed by the specification). Because the type assertion fails, \"\" is the value of aud. This is a security problem if the JWT token is presented to a service that lacks its own audience check."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-287"
                },
                {
                  "lang": "en",
                  "value": "CWE-755"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515"
            },
            {
              "name": "https://github.com/dgrijalva/jwt-go/pull/426",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/dgrijalva/jwt-go/pull/426"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-07-21T11:39Z",
      "publishedDate": "2020-09-30T18:15Z"
    }
  }
}


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