GSD-2021-26073

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.
Aliases
Aliases
CVE-2021-26073
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{
  "GSD": {
    "alias": "CVE-2021-26073",
    "description": "Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions between 3.0.2 - 6.5.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.",
    "id": "GSD-2021-26073"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-26073"
      ],
      "details": "Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.",
      "id": "GSD-2021-26073",
      "modified": "2023-12-13T01:23:33.143927Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@atlassian.com",
        "DATE_PUBLIC": "2021-04-13T00:00:00",
        "ID": "CVE-2021-26073",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Atlassian Connect Express (ACE)",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003e=",
                          "version_value": "3.0.2"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_value": "6.6.0"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Atlassian"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Broken Authentication"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099",
            "refsource": "MISC",
            "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099"
          },
          {
            "name": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[\u2026]ypass-of-app-qsh-verification-via-context-jwts/47072",
            "refsource": "MISC",
            "url": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[\u2026]ypass-of-app-qsh-verification-via-context-jwts/47072"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20210604-0004/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20210604-0004/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:atlassian:connect_express:*:*:*:*:*:node.js:*:*",
                "cpe_name": [],
                "versionEndExcluding": "6.6.0",
                "versionStartIncluding": "3.0.2",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@atlassian.com",
          "ID": "CVE-2021-26073"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Broken Authentication in Atlassian Connect Express (ACE) from version 3.0.2 before version 6.6.0: Atlassian Connect Express is a Node.js package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Express app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Express versions from 3.0.2 before 6.6.0 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-287"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "N/A",
              "refsource": "N/A",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://confluence.atlassian.com/pages/viewpage.action?pageId=1051986099"
            },
            {
              "name": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[\u2026]ypass-of-app-qsh-verification-via-context-jwts/47072",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Vendor Advisory"
              ],
              "url": "https://community.developer.atlassian.com/t/action-required-atlassian-connect-vulnerability-a[\u2026]ypass-of-app-qsh-verification-via-context-jwts/47072"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210604-0004/",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://security.netapp.com/advisory/ntap-20210604-0004/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "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": 7.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.1,
          "impactScore": 4.0
        }
      },
      "lastModifiedDate": "2022-03-01T16:23Z",
      "publishedDate": "2021-04-16T03:15Z"
    }
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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