github - ghsa-5vf7-q87h-pg6w

GHSA-5VF7-Q87H-PG6W

Vulnerability from github – Published: 2020-05-07 21:10 – Updated: 2021-01-08 20:20

Summary

Cross-Site Scripting in BookStack

Details

Impact

A user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines.

This most impacts scenarios where not-trusted users are given permission to create comments.

Patches

The issue was addressed in BookStack v0.29.2.

After upgrading, The command php artisan bookstack:regenerate-comment-content should be ran to remove any pre-existing dangerous content.

Workarounds

Comments can be disabled in the system settings to prevent them being shown to users. Alternatively, comment creation permissions can be altered as required to only those who are trusted but this will not address existing exploitation of this vulnerability.

References

For more information

If you have any questions or comments about this advisory: * Open an issue in the BookStack GitHub repository. * Ask on the BookStack Discord chat. * Follow the BookStack Security Advice to contact someone privately.

Severity ?

6.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "ssddanbrown/bookstack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.18.0"
            },
            {
              "fixed": "0.29.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-11055"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-05-07T18:36:46Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nA user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines.\n\nThis most impacts scenarios where not-trusted users are given permission to create comments.\n\n### Patches\n\nThe issue was addressed in BookStack v0.29.2.\n\nAfter upgrading, The command `php artisan bookstack:regenerate-comment-content` should be ran to remove any pre-existing dangerous content. \n\n### Workarounds\n\nComments can be disabled in the system settings to prevent them being shown to users. Alternatively, comment creation permissions can be altered as required to only those who are trusted but this will not address existing exploitation of this vulnerability. \n\n### References\n\n* [BookStack Beta v0.29.2](https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2)\n* JVN#41035278\n* [BookStack Blog Post](https://bookstackapp.com/blog/beta-release-v0-29-2/)\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n* Open an issue in [the BookStack GitHub repository](BookStackApp/BookStack/issues).\n* Ask on the [BookStack Discord chat](https://discord.gg/ztkBqR2).\n* Follow the [BookStack Security Advice](https://github.com/BookStackApp/BookStack#-security) to contact someone privately.",
  "id": "GHSA-5vf7-q87h-pg6w",
  "modified": "2021-01-08T20:20:35Z",
  "published": "2020-05-07T21:10:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-5vf7-q87h-pg6w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11055"
    },
    {
      "type": "WEB",
      "url": "https://bookstackapp.com/blog/beta-release-v0-29-2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.29.2"
    },
    {
      "type": "WEB",
      "url": "http://jvn.jp/en/jp/JVN41035278/index.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Cross-Site Scripting in BookStack"
}

CVE-2020-11055 (GCVE-0-2020-11055)

Vulnerability from cvelistv5 – Published: 2020-05-07 20:40 – Updated: 2024-08-04 11:21

Summary

In BookStack greater than or equal to 0.18.0 and less than 0.29.2, there is an XSS vulnerability in comment creation. A user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines. This most impacts scenarios where not-trusted users are given permission to create comments. This has been fixed in 0.29.2.

Severity ?

6.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/BookStackApp/BookStack/securit…	x_refsource_CONFIRM
	https://bookstackapp.com/blog/beta-release-v0-29-2/	x_refsource_MISC
	https://github.com/BookStackApp/BookStack/release…	x_refsource_MISC
	http://jvn.jp/en/jp/JVN41035278/index.html	third-party-advisoryx_refsource_JVN

Impacted products

	Vendor	Product	Version
	BookStackApp	BookStack	Affected: >= 0.18.0, < 0.29.2

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

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.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-5VF7-Q87H-PG6W

Impact

Patches

Workarounds

References

For more information

CVE-2020-11055 (GCVE-0-2020-11055)

Tags

Sightings

Nomenclature