CVE-2024-55636: Drupal core - Less critical - Gadget chain - SA-CORE-2024-006
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 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.
Other sources
Drupal core contains a potential PHP Object Injection vulnerability that (if combined with another exploit) could lead to Artbitrary File Deletion. It is not directly exploitable.
This issue is mitigated by the fact that in order to be exploitable, a separate vulnerability must be present that allows an attacker to pass unsafe input to unserialize(). There are no such known exploits in Drupal core.
To help protect against this vulnerability, types have been added to properties in some of Drupal core's classes. If an application extends those classes, the same types may need to be specified on the subclass to avoid a TypeError.
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.
— GitHub
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-55636?
CVE-2024-55636 is a critical severity vulnerability that allows for object injection through deserialization of untrusted data in Drupal Core.
How do I fix CVE-2024-55636?
To fix CVE-2024-55636, you should update Drupal Core to versions 11.0.8, 10.3.9, or 10.2.11, depending on your currently installed version.
Which versions of Drupal are affected by CVE-2024-55636?
CVE-2024-55636 affects Drupal Core versions prior to 10.2.11, 10.3.9, and 11.0.8.
Is CVE-2024-55636 easy to exploit?
Yes, the vulnerability can be easily exploited by attackers due to unsafe deserialization handling.
What can happen if I don't remediate CVE-2024-55636?
If CVE-2024-55636 is not remediated, it can allow attackers to execute arbitrary code or modify site data through object injection.