Unrated severityNVD Advisory· Published Feb 22, 2022· Updated Apr 23, 2025
Null pointer dereference in envoy
CVE-2021-43824
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.
Affected products
1- Range: >= 1.20.0, < 1.20.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253amitrex_refsource_MISC
- github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2pmitrex_refsource_CONFIRM
News mentions
0No linked articles in our index yet.