PT-2021-18253 · Envoy · Envoy

Name of the Vulnerable Software and Affected Versions: Envoy versions 1.18.2 and earlier Description: Envoy does not decode escaped slash sequences %2F and %5C in HTTP URL paths. A remote attacker may craft a path with escaped slashes, e.g. /something%2F..%2Fadmin, to bypass access control, e.g. ...

CVE-2021-29492: Improper Limitation of a Pathname to a Restricted Directory

Envoy is a cloud-native edge/middle/service proxy. Envoy does not decode escaped slash sequences %2F and %5C in HTTP URL paths in versions 1.18.2 and before. A remote attacker may craft a path with escaped slashes, e.g. /something%2F..%2Fadmin, to bypass access control, e.g. a block on /admin. A...