Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2021-43824

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.

  • Published: Feb 23, 2022
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-43824
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
envoyproxy / envoy 1.21.0 1.21.1
envoyproxy / envoy 1.20.0 1.20.2
envoyproxy / envoy 1.19.0 1.19.3
envoyproxy / envoy - 1.18.6