CVE-2024-28235: contao Information Disclosure — Fix

Description

Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.

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CVSS v3.1 Score

8.3

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-200 CWE-200

Affected Products

Vendor	Product	Versions
contao	contao	4.9.0 — 4.13.40
contao	contao	5.0.0 — 5.3.4

References

Advisories & Patches

https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler https://github.com/contao/contao/commit/73a2770e2d3535ec9f1b03d54be00e56ebb8ff16 https://github.com/contao/contao/commit/79b7620d01ce8f46ce2b331455e0d95e5208de3d https://github.com/contao/contao/security/advisories/GHSA-9jh5-qf84-x6pr https://contao.org/en/security-advisories/session-cookie-disclosure-in-the-crawler https://github.com/contao/contao/commit/73a2770e2d3535ec9f1b03d54be00e56ebb8ff16 https://github.com/contao/contao/commit/79b7620d01ce8f46ce2b331455e0d95e5208de3d https://github.com/contao/contao/security/advisories/GHSA-9jh5-qf84-x6pr

Other References

https://github.com/contao/contao/blob/14e9ef4bc8b82936ba2d0e04164581145a075e2a/core-bundle/src/Resources/contao/classes/Crawl.php#L129 https://github.com/contao/contao/blob/14e9ef4bc8b82936ba2d0e04164581145a075e2a/core-bundle/src/Resources/contao/classes/Crawl.php#L129

Frequently Asked Questions

What is CVE-2024-28235? +

Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages. It has a CVSS v3.1 base score of 8.3 (HIGH).

How severe is CVE-2024-28235? +

CVE-2024-28235 has a CVSS v3.1 score of 8.3 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-28235? +

CVE-2024-28235 affects products from contao, specifically: contao. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-28235? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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