CVE-2024-21547: Spatie/browsershot Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-v528-6rq9-h6gw
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2024-21547 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Spatie/browsershot libraries in the Packagist ecosystem. The issue involves spatie browsershot directory traversal vulnerability. Remediation is available by upgrading affected packages to version 5.0.2.

CVE-2024-21547 at a Glance

CVE Identifier CVE-2024-21547
GHSA Identifier GHSA-v528-6rq9-h6gw
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Spatie/browsershot
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

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

How to Fix CVE-2024-21547

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

spatie/browsershot fixed: 5.0.2 
Upgrade spatie/browsershot to 5.0.2
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 spatie/browsershot

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-21547, inspect your project dependencies for Spatie/browsershot:

inspect dependencies for spatie/browsershot

Analyze the terminal output to locate any version of Spatie/browsershot in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.2), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Spatie/browsershot, 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

Versions of the package spatie/browsershot before 5.0.2 are vulnerable to Directory Traversal due to URI normalisation in the browser where the file:// check can be bypassed with file:\\. An attacker could read any file on the server by exploiting the normalization of \ into /.

CVE-2024-21547 Affected Spatie/browsershot Versions

1 component(s)
Fixed Versions:
5.0.2
Product / Package Ecosystem Affected Versions Fixed Version
spatie/browsershot
 Packagist
< 5.0.2
5.0.2

References

NVD — CVE-2024-21547 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-21547
Security Fix Commit FIX COMMIT
https://github.com/spatie/browsershot/commit/dfc3635b83dd980e5c39f8f8c73e87723b99ca01
Spatie/browsershot Source Repository REPOSITORY
https://gist.github.com/chuajianshen/baa71db588cfc038fb5d65624a47be81
Spatie/browsershot Source Repository REPOSITORY
https://github.com/spatie/browsershot
Spatie/browsershot Security Information SECURITY
https://security.snyk.io/vuln/SNYK-PHP-SPATIEBROWSERSHOT-8501858

Frequently Asked Questions

What is CVE-2024-21547?
CVE-2024-21547 is a security vulnerability in Spatie/browsershot involving Spatie Browsershot Directory Traversal vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Spatie/browsershot versions are affected?
Affected versions include releases prior to 5.0.2 across affected packages: spatie/browsershot.
What version fixes CVE-2024-21547?
Upgrading to 5.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spatie/browsershot affected?
Yes, spatie/browsershot is affected in releases prior to 5.0.2. Upgrade your dependency to 5.0.2 or later.
What is the CVSS score of CVE-2024-21547?
CVE-2024-21547 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-21547?
CVE-2024-21547 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Packagist dependencies for CVE-2024-21547?
Run the dependency tree command: 'inspect dependencies for spatie/browsershot'. 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-v528-6rq9-h6gw",
  "modified" : "2024-12-18T15:48:22Z",
  "published" : "2024-12-18T06:30:49Z",
  "aliases" : [ "CVE-2024-21547" ],
  "summary" : "Spatie Browsershot Directory Traversal vulnerability",
  "details" : "Versions of the package spatie/browsershot before 5.0.2 are vulnerable to Directory Traversal due to URI normalisation in the browser where the file:// check can be bypassed with file:\\\\. An attacker could read any file on the server by exploiting the normalization of \\ into /.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "spatie/browsershot"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-21547"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spatie/browsershot/commit/dfc3635b83dd980e5c39f8f8c73e87723b99ca01"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/chuajianshen/baa71db588cfc038fb5d65624a47be81"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/spatie/browsershot"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-PHP-SPATIEBROWSERSHOT-8501858"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-12-18T15:48:22Z",
    "nvd_published_at" : "2024-12-18T06:15:23Z"
  }
}