CVE-2024-53270
Description
A flaw was found in Envoy. In systems where http1_server_abort_dispatch is configured, Envoy does not properly handle the control flow during H1 stream resets. This can trigger a null pointer error and lead to an application crash.
Statement
This vulnerability in Envoy Proxy is marked as important severity rather than moderate due to its ability to cause a null pointer dereference, leading to a complete crash of the proxy under specific conditions. As Envoy is commonly deployed in mission-critical roles such as a high-performance edge, middle, or service proxy, a crash can disrupt downstream and upstream communication, effectively bringing down services dependent on Envoy. The issue is exacerbated by its potential to occur during load shedding, a mechanism typically invoked during resource exhaustion, which is a critical time for maintaining service availability.
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).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | Low | 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 | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Other
Technical Impact: Other; Alter Execution Logic
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