Vulnerability Information
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Vulnerability Title
HTTP/2: CPU exhaustion due to CONTINUATION frame flood
Vulnerability 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.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Vulnerability Type
未有动作错误条件的检测
Vulnerability Title
Envoy 安全漏洞
Vulnerability Description
Envoy是一款开源的分布式代理服务器。 Envoy存在安全漏洞，该漏洞源于HTTP/2协议栈容易因为连续帧泛滥而导致CPU耗尽。受影响的产品和版本：Envoy 1.29.3之前版本，1.28.2之前版本，1.27.4之前版本，1.26.8 之前版本。
CVSS Information
N/A
Vulnerability Type
N/A