CVE-2019-9901 – istio/envoy: Path traversal via URL Patch manipulation in HTTP/1.x header

https://notcve.org/view.php?id=CVE-2019-9901

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. Envoy versión 1.9.0 y anteriores no normalizan las path URL HTTP. • https://github.com/envoyproxy/envoy/issues/6435 https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history https://access.redhat.com/security/cve/CVE-2019-9901 https://bugzilla.redhat.com/show_bug.cgi?id=1698025 • CWE-20: Improper Input Validation CWE-706: Use of Incorrectly-Resolved Name or Reference •