CVE-2024-28235: Contao Possible Cookie Sharing With External Vulnerability

HIGH
Advisory Identifier: GHSA-9jh5-qf84-x6pr
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CVSS 8.3
CWE-200
Published
Advisory Summary

CVE-2024-28235 is a HIGH (CVSS 8.3) possible cookie sharing with external vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Contao libraries in the Packagist ecosystem. The issue involves possible cookie sharing with external domains while checking protected pages for broken links. Remediation is available by upgrading affected packages to version 4.13.40, 5.3.4.

CVE-2024-28235 at a Glance

CVE Identifier CVE-2024-28235
GHSA Identifier GHSA-9jh5-qf84-x6pr
Severity HIGH
CVSS v3.1 Base Score 8.3
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Contao
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.3

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

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

How to Fix CVE-2024-28235

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

contao/core-bundle fixed: 4.13.40 
Upgrade contao/core-bundle to 4.13.40
contao/core-bundle fixed: 5.3.4 
Upgrade contao/core-bundle to 5.3.4
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 contao/core-bundle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-28235, inspect your project dependencies for Contao:

inspect dependencies for contao/core-bundle

Analyze the terminal output to locate any version of Contao in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.13.40), 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-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Contao, 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

### Impact If the crawler is set to crawl protected pages, it sends the cookie header to externals URLs. ### Patches Update to Contao 4.13.40 or 5.3.4. ### Workarounds Disable crawling protected pages. ### References https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler ### For more information If you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).

CVE-2024-28235 Affected Contao Versions

2 component(s)
Fixed Versions:
4.13.405.3.4
Product / Package Ecosystem Affected Versions Fixed Version
contao/core-bundle
 Packagist
≥ 4.9.0
< 4.13.40
4.13.40
contao/core-bundle
 Packagist
≥ 5.0.0-RC1
< 5.3.4
5.3.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/contao/contao/security/advisories/GHSA-9jh5-qf84-x6pr
NVD — CVE-2024-28235 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-28235
Security Fix Commit FIX COMMIT
https://github.com/contao/contao/commit/73a2770e2d3535ec9f1b03d54be00e56ebb8ff16
Security Fix Commit FIX COMMIT
https://github.com/contao/contao/commit/79b7620d01ce8f46ce2b331455e0d95e5208de3d
Contao Security Information SECURITY
https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler
Contao Source Repository REPOSITORY
https://github.com/contao/contao
Contao Source Repository REPOSITORY
https://github.com/contao/contao/blob/14e9ef4bc8b82936ba2d0e04164581145a075e2a/core-bundle/src/Resources/contao/classes/Crawl.php#L129

Frequently Asked Questions

What is CVE-2024-28235?
CVE-2024-28235 is a security vulnerability in Contao involving Possible cookie sharing with external domains while checking protected pages for broken links under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Contao versions are affected?
Affected versions include releases prior to 4.13.40, 5.3.4 across affected packages: contao/core-bundle.
What version fixes CVE-2024-28235?
Upgrading to 4.13.40, 5.3.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is contao/core-bundle affected?
Yes, contao/core-bundle is affected in releases prior to 4.13.40, 5.3.4. Upgrade your dependency to 4.13.40, 5.3.4 or later.
What is the CVSS score of CVE-2024-28235?
CVE-2024-28235 has a CVSS v3.1 base score of 8.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2024-28235?
CVE-2024-28235 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Packagist dependencies for CVE-2024-28235?
Run the dependency tree command: 'inspect dependencies for contao/core-bundle'. 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-9jh5-qf84-x6pr",
  "modified" : "2024-04-09T21:00:46Z",
  "published" : "2024-04-09T15:50:59Z",
  "aliases" : [ "CVE-2024-28235" ],
  "summary" : "Contao: Possible cookie sharing with external domains while checking protected pages for broken links",
  "details" : "### Impact\n\nIf the crawler is set to crawl protected pages, it sends the cookie header to externals URLs.\n\n### Patches\n\nUpdate to Contao 4.13.40 or 5.3.4.\n\n### Workarounds\n\nDisable crawling protected pages.\n\n### References\n\nhttps://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler\n\n### For more information\n\nIf you have any questions or comments about this advisory, open an issue in [contao/contao](https://github.com/contao/contao/issues/new/choose).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "contao/core-bundle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.9.0"
      }, {
        "fixed" : "4.13.40"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "contao/core-bundle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0-RC1"
      }, {
        "fixed" : "5.3.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/security/advisories/GHSA-9jh5-qf84-x6pr"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-28235"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/commit/73a2770e2d3535ec9f1b03d54be00e56ebb8ff16"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/commit/79b7620d01ce8f46ce2b331455e0d95e5208de3d"
  }, {
    "type" : "WEB",
    "url" : "https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/contao/contao"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/contao/contao/blob/14e9ef4bc8b82936ba2d0e04164581145a075e2a/core-bundle/src/Resources/contao/classes/Crawl.php#L129"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-09T15:50:59Z",
    "nvd_published_at" : "2024-04-09T16:15:07Z"
  }
}