CVE-2024-30255
Description
Envoy is a cloud-native, open source edge and service proxy. The HTTP/2 protocol stack in Envoy versions prior to 1.29.3, 1.28.2, 1.27.4, and 1.26.8 are vulnerable to CPU exhaustion due to flood of CONTINUATION frames. Envoy's HTTP/2 codec allows the client to send an unlimited number of CONTINUATION frames even after exceeding Envoy's header map limits. This allows an attacker to send a sequence of CONTINUATION frames without the END_HEADERS bit set causing CPU utilization, consuming approximately 1 core per 300Mbit/s of traffic and culminating in denial of service through CPU exhaustion. Users should upgrade to version 1.29.3, 1.28.2, 1.27.4, or 1.26.8 to mitigate the effects of the CONTINUATION flood. As a workaround, disable HTTP/2 protocol for downstream connections.
Severity: N/A
CVE ID: CVE-2024-30255
CVSS Score: N/A
CVSS Metrics: NVD assessment not yet provided.
Severity: MEDIUM
CVE ID: CVE-2024-30255
CVSS Score: 5.3
CVSS Metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Proof Of Concept
blackmagic2023
CVE-2024-30255 This repository contains a proof-of-concept (PoC) Python script to demonstrate the CPU exhaustion vulnerability in Envoy caused by a flood of CONTINUATION frames.
Refrence: GitHub
Content on GitHub
lockness-Ko | watchers:9
CVE-2024-27316
Proof of concept (PoC) for CVE-2024-27316 (tested), CVE-2024-30255 (untested), CVE-2024-31309 (untested), CVE-2024-28182 (untested), CVE-2024-2653 (untested) and CVE-2024-27919 (untested)
Refrence: GitHub