CVE-2024-38821
Description
An authorization bypass vulnerability was found in Spring WebFlux applications, impacting static resources under specific conditions. If an application uses Spring's static resources support with restricted (non-permitAll) authorization rules, unauthorized access to these resources may be possible.
Statement
This issue is classified as a moderate severity vulnerability because it impacts only specific configurations in Spring WebFlux applications and does not compromise dynamic or core application functionality. To exploit this vulnerability, the application must not only be using Spring WebFlux but must also serve static resources with non-permitAll authorization rules. Furthermore, the breach affects only static resources—such as CSS, JavaScript, or images—that, while potentially sensitive, do not contain dynamic, user-specific data or functional endpoints that interact directly with business logic.
Red Hat JBoss Enterprise Application Platform (EAP/XP) is not affected by this issue, as they do not utilize Spring WebFlux or the associated static resources functionality, either at runtime or within distributed repositories. This architecture eliminates the conditions necessary for this vulnerability to be exploited.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.4 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | High | N/A | N/A |
| Privileges Required | None | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | High | N/A | N/A |
| Integrity Impact | High | N/A | N/A |
| Availability Impact | None | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Access control checks for specific user data or functionality can be bypassed.
Access Control
Technical Impact: Gain Privileges or Assume Identity
Horizontal escalation of privilege is possible (one user can view/modify information of another user).
Access Control
Technical Impact: Gain Privileges or Assume Identity
Vertical escalation of privilege is possible if the user-controlled key is actually a flag that indicates administrator status, allowing the attacker to gain administrative access.
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