Drupal Core: Improper Handling of Case Sensitivity
CVE-2024-55634 is a high-severity improper handling of case sensitivity vulnerability in Drupal Core from Drupal, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 10.2.11, 10.3.9, 11.0.8 as the first without the flaw, so updating Drupal Core to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.41% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Drupal Core to 10.2.11 or 10.3.9 or 11.0.8, whichever matches your release line, or a later version.
- Update Drupal to 10.2.11 or 10.3.9 or 11.0.8, whichever matches your release line, or a later version.
- Read the advisory on drupal.org for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Drupal | Drupal Core | 8.0.0 up to, but not including, 10.2.11; 10.3.0 up to, but not including, 10.3.9; 11.0.0 up to, but not including, 11.0.8 | 10.2.11, 10.3.9, 11.0.8 |
| Drupal | Drupal | 8.0.0 up to, but not including, 10.2.11; 10.3.0 up to, but not including, 10.3.9; 11.0.0 up to, but not including, 11.0.8 | 10.2.11, 10.3.9, 11.0.8 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. Scored by CISA (ADP).
Official description
A vulnerability in Drupal Core allows Privilege Escalation.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.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Handling of Case Sensitivity
The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.
How developers prevent this class of flaw
- Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.
- Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
More Improper Handling of Case Sensitivity vulnerabilities (CWE-178)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in Drupal Core
- 8.1 High severity
- 9.8 Critical severity
Drupal Core SQL Injection Exploited
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Improper Handling of Case Sensitivity vulnerabilities
- 9.8 Critical severity
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
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