high7.5
CVE-2021-43824
Envoy is an open source edge and service proxy, designed for cloud-native applications.
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Envoyproxy | Envoy | before 1.18.6 from 1.19.0 before 1.19.3 from 1.20.0 before 1.20.2 from 1.21.0 before 1.21.1 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p
- https://github.com/envoyproxy/envoy/commit/9371333230b1a6e1be2eccf4868771e11af6253a
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-vj5m-rch8-5r2p