Published: 24/08/2021 Updated: 15/06/2022

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

An uncontrolled resource consumption vulnerability was found in envoyproxy/envoy. When envoy handles a large number of HTTP/2 requests which open and then reset the connection, it can cause excessive CPU usage. This flaw allows an malicious user to cause a denial of service on the proxy. The highest threat from this vulnerability is to system availability.

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envoyproxy envoy 1.19.0
envoyproxy envoy

An uncontrolled resource consumption vulnerability was found in envoyproxy/envoy When envoy handles a large number of HTTP/2 requests which open and then reset the connection, it can cause excessive CPU usage This flaw allows an attacker to cause a denial of service on the proxy The highest threat from this vulnerability is to system availabilit ...

Envoy, as used by Istio before version 1111, contains a remotely exploitable vulnerability where an Envoy client opening and then resetting a large number of HTTP/2 requests could lead to excessive CPU consumption ...

CWE-834 https://www.envoyproxy.io/docs/envoy/v1.19.0/version_history/version_history https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xh3-33v5-chcc https://nvd.nist.gov https://access.redhat.com/security/cve/cve-2021-32778

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CVE-2021-32778

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