Detections
Analytics
CVE-2019-9901
critical
Description
Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.
References
https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history
https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w