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.

Remediation

References

CVE-2021-43824

Related Vulnerabilities

Zenphoto Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Vulnerability (CVE-2010-4906)

Jenkins Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2020-2222)

Drupal Other Vulnerability (CVE-2007-0124)

IBM RTC Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2021-20447)

LimeSurvey Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') Vulnerability (CVE-2019-25019)

Severity

High

Classification

CVE-2021-43824 CWE-476 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Tags

Missing Update Known Vulnerabilities