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.
2019-04-25T16:29:01.200
2024-11-21T04:52:32.450
Modified
CVSSv3.0: 6.5 (MEDIUM)
AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | envoyproxy | envoy | ≤ 1.9.0 | Yes |