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CVE-2019-9901

CVE-2019-9901

CVSS 6.5 MEDIUMEPSS 2.7%
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.
CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N
Affected products
n/a · n/a

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References
https://github.com/envoyproxy/envoy/issues/6435https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2whttps://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAMhttps://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history