CVE-2021-3944: Ssddanbrown/bookstack Bookstack Is Vulnerable To Cross-Site Vulnerability

LOW
Advisory Identifier: GHSA-wc7v-77jr-5c3m
Share
CVSS 3.1
CWE-352
Published
Advisory Summary

CVE-2021-3944 is a LOW (CVSS 3.1) bookstack is vulnerable to cross-site vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Ssddanbrown/bookstack libraries in the Packagist ecosystem. The issue involves bookstack is vulnerable to cross-site request forgery (csrf). Remediation is available by upgrading affected packages to version 21.11.

CVE-2021-3944 at a Glance

CVE Identifier CVE-2021-3944
GHSA Identifier GHSA-wc7v-77jr-5c3m
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Ssddanbrown/bookstack
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 3.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2021-3944

To remediate this vulnerability, upgrade all affected Ssddanbrown/bookstack dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ssddanbrown/bookstack fixed: 21.11 
Upgrade ssddanbrown/bookstack to 21.11
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for ssddanbrown/bookstack

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-3944, inspect your project dependencies for Ssddanbrown/bookstack:

inspect dependencies for ssddanbrown/bookstack

Analyze the terminal output to locate any version of Ssddanbrown/bookstack in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 21.11), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Ssddanbrown/bookstack, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

bookstack is vulnerable to Cross-Site Request Forgery (CSRF)

CVE-2021-3944 Affected Ssddanbrown/bookstack Versions

1 component(s)
Fixed Versions:
21.11
Product / Package Ecosystem Affected Versions Fixed Version
ssddanbrown/bookstack
 Packagist
< 21.11
21.11

References

NVD — CVE-2021-3944 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3944
Security Fix Commit FIX COMMIT
https://github.com/bookstackapp/bookstack/commit/88e6f93abf54192a69cc8080e0dc6516ee68ccbb
Ssddanbrown/bookstack Source Repository REPOSITORY
https://github.com/bookstackapp/bookstack
huntr.dev/bounties/65551490-5... WEB
https://huntr.dev/bounties/65551490-5ade-49aa-8b8d-274c2ca9fdc9

Frequently Asked Questions

What is CVE-2021-3944?
CVE-2021-3944 is a security vulnerability in Ssddanbrown/bookstack involving bookstack is vulnerable to Cross-Site Request Forgery (CSRF) under CWE-352: Cross-Site Request Forgery (CSRF).
Which Ssddanbrown/bookstack versions are affected?
Affected versions include releases prior to 21.11 across affected packages: ssddanbrown/bookstack.
What version fixes CVE-2021-3944?
Upgrading to 21.11 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ssddanbrown/bookstack affected?
Yes, ssddanbrown/bookstack is affected in releases prior to 21.11. Upgrade your dependency to 21.11 or later.
What is the CVSS score of CVE-2021-3944?
CVE-2021-3944 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2021-3944?
CVE-2021-3944 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Packagist dependencies for CVE-2021-3944?
Run the dependency tree command: 'inspect dependencies for ssddanbrown/bookstack'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-wc7v-77jr-5c3m",
  "modified" : "2021-12-03T15:35:34Z",
  "published" : "2021-12-03T20:38:37Z",
  "aliases" : [ "CVE-2021-3944" ],
  "summary" : "bookstack is vulnerable to Cross-Site Request Forgery (CSRF)",
  "details" : "bookstack is vulnerable to Cross-Site Request Forgery (CSRF)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ssddanbrown/bookstack"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "21.11"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-3944"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/bookstackapp/bookstack/commit/88e6f93abf54192a69cc8080e0dc6516ee68ccbb"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/bookstackapp/bookstack"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/65551490-5ade-49aa-8b8d-274c2ca9fdc9"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-12-03T15:35:34Z",
    "nvd_published_at" : "2021-12-02T17:15:00Z"
  }
}