CVE-2024-55636
Published: 10 December 2024
Summary
CVE-2024-55636 is a critical-severity Improperly Controlled Modification of Dynamically-Determined Object Attributes (CWE-915) vulnerability in Drupal Drupal. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 6.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2024-55636 is a Deserialization of Untrusted Data vulnerability in Drupal Core that permits object injection. It affects Drupal Core versions from 8.0.0 before 10.2.11, from 10.3.0 before 10.3.9, and from 11.0.0 before 11.0.8. The core contains a gadget chain that becomes dangerous only when combined with an insecure deserialization flaw elsewhere in an application.
An unauthenticated attacker can supply crafted serialized data to trigger the gadget chain and obtain remote code execution. The issue carries a CVSS score of 9.8 and is tracked under CWE-502 and CWE-915, indicating that exploitation requires another vector that performs untrusted deserialization on the target site.
The advisory at https://www.drupal.org/sa-core-2024-006 addresses the flaw by releasing patched versions 10.2.11, 10.3.9, and 11.0.8. The associated EPSS score has remained flat at 0.1147 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-3453
Vulnerability details
Deserialization of Untrusted Data vulnerability in Drupal Core allows Object Injection.This issue affects Drupal Core: from 8.0.0 before 10.2.11, from 10.3.0 before 10.3.9, from 11.0.0 before 11.0.8. Drupal core contains a chain of methods that is exploitable when an insecure…
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deserialization vulnerability exists on the site. This so called gadget chain presents no direct threat, but is a vector that can be used to achieve remote code execution if the application deserializes untrusted data due to another vulnerability.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.