GSD-2021-32661

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
Backstage is an open platform for building developer portals. In versions of Backstage's Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.
Aliases
Aliases
CVE-2021-32661
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{
  "GSD": {
    "alias": "CVE-2021-32661",
    "description": "Backstage is an open platform for building developer portals. In versions of Backstage\u0027s Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.",
    "id": "GSD-2021-32661"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-32661"
      ],
      "details": "Backstage is an open platform for building developer portals. In versions of Backstage\u0027s Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.",
      "id": "GSD-2021-32661",
      "modified": "2023-12-13T01:23:08.762325Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-32661",
        "STATE": "PUBLIC",
        "TITLE": "TechDocs object element script injection"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "backstage",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 0.9.5"
                        }
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            "value": "Backstage is an open platform for building developer portals. In versions of Backstage\u0027s Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-77: Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c",
            "refsource": "MISC",
            "url": "https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c"
          },
          {
            "name": "https://github.com/backstage/backstage/releases/tag/release-2021-06-03",
            "refsource": "MISC",
            "url": "https://github.com/backstage/backstage/releases/tag/release-2021-06-03"
          },
          {
            "name": "https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f",
            "refsource": "CONFIRM",
            "url": "https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-gg96-f8wr-p89f",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c0.9.5",
          "affected_versions": "All versions before 0.9.5",
          "cvss_v2": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-434",
            "CWE-937"
          ],
          "date": "2021-06-21",
          "description": "Backstage is an open platform for building developer portals. In versions of Backstage\u0027s Techdocs Plugin (`@backstage/plugin-techdocs`), a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`.",
          "fixed_versions": [
            "0.9.5"
          ],
          "identifier": "CVE-2021-32661",
          "identifiers": [
            "GHSA-gg96-f8wr-p89f",
            "CVE-2021-32661"
          ],
          "not_impacted": "All versions starting from 0.9.5",
          "package_slug": "npm/@backstage/plugin-techdocs",
          "pubdate": "2021-06-04",
          "solution": "Upgrade to version 0.9.5 or above.",
          "title": "Unrestricted Upload of File with Dangerous Type",
          "urls": [
            "https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f",
            "https://nvd.nist.gov/vuln/detail/CVE-2021-32661",
            "https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c",
            "https://github.com/backstage/backstage/releases/tag/release-2021-06-03",
            "https://github.com/advisories/GHSA-gg96-f8wr-p89f"
          ],
          "uuid": "a742a8c7-0142-46df-9903-aa2a1da7d420"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
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            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:linuxfoundation:\\@backstage\\/plugin-techdocs:*:*:*:*:*:node.js:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.9.5",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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          "ID": "CVE-2021-32661"
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        "description": {
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              "value": "Backstage is an open platform for building developer portals. In versions of Backstage\u0027s Techdocs Plugin (`@backstage/plugin-techdocs`) prior to 0.9.5, a malicious internal actor can potentially upload documentation content with malicious scripts by embedding the script within an `object` element. This may give access to sensitive data when other users visit that same documentation page. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.9.5` release of `@backstage/plugin-techdocs`."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
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                  "value": "CWE-434"
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            {
              "name": "https://github.com/backstage/backstage/security/advisories/GHSA-gg96-f8wr-p89f",
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.9,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
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          "impactScore": 5.2
        }
      },
      "lastModifiedDate": "2021-06-21T14:54Z",
      "publishedDate": "2021-06-03T18:15Z"
    }
  }
}


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  • 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.
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  • 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.



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