CVE-2021-43824

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a Patch Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p Issue Tracking Third Party Advisory
https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a Patch Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p Issue Tracking Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*
History

21 Nov 2024, 06:29

Type Values Removed Values Added
References () https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a - Patch, Third Party Advisory () https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a - Patch, Third Party Advisory
References () https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p - Issue Tracking, Third Party Advisory () https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p - Issue Tracking, Third Party Advisory

01 Mar 2022, 20:47

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 4.3
v3 : 7.5
References (CONFIRM) https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p - (CONFIRM) https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p - Issue Tracking, Third Party Advisory
References (MISC) https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a - (MISC) https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a - Patch, Third Party Advisory
CPE cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*

24 Feb 2022, 15:15

Type Values Removed Values Added
Summary 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. 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.

22 Feb 2022, 23:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-02-22 23:15

Updated : 2024-11-21 06:29

NVD link : CVE-2021-43824

Mitre link : CVE-2021-43824

CVE.ORG link : CVE-2021-43824

JSON object : View

Products Affected

envoyproxy

  • envoy
CWE
CWE-476

NULL Pointer Dereference