GSD-2020-26210

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4.
Aliases
Aliases
CVE-2020-26210
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{
  "GSD": {
    "alias": "CVE-2020-26210",
    "description": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4.",
    "id": "GSD-2020-26210"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26210"
      ],
      "details": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4.",
      "id": "GSD-2020-26210",
      "modified": "2023-12-13T01:22:09.177559Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26210",
        "STATE": "PUBLIC",
        "TITLE": "Cross-Site Scripting in BookStack"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "BookStack",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 0.30.4"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "BookStackApp"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "{\"CWE-79\":\"Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h",
            "refsource": "CONFIRM",
            "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"
          },
          {
            "name": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227",
            "refsource": "MISC",
            "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"
          },
          {
            "name": "https://bookstackapp.com/blog/beta-release-v0-30-4/",
            "refsource": "MISC",
            "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"
          },
          {
            "name": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4",
            "refsource": "MISC",
            "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-7p2j-4h6p-cq3h",
        "discovery": "UNKNOWN"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.30.4",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-26210"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in version 0.30.4."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-79"
                }
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bookstackapp.com/blog/beta-release-v0-30-4/",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"
            },
            {
              "name": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"
            },
            {
              "name": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h",
              "refsource": "CONFIRM",
              "tags": [
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              ],
              "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"
            },
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              "name": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 5.8
        }
      },
      "lastModifiedDate": "2020-11-16T16:14Z",
      "publishedDate": "2020-11-03T19:15Z"
    }
  }
}


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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.
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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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