CVE-2021-43824

high

Description

Envoy is an open source edge and service proxy, designed for cloud-native applications. In affected versions a crafted request crashes Envoy when a CONNECT request is sent to JWT filter configured with regex match. This provides a denial of service attack vector. The only workaround is to not use regex in the JWT filter. Users are advised to upgrade.

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p

https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a

Details

Source: Mitre, NVD

Published: 2022-02-22

Updated: 2022-03-01

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High