CVE-2019-9901: Use of Incorrectly-Resolved Name or Reference
(updated )
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
- github.com/advisories/GHSA-2wmf-p7f8-w42h
- github.com/envoyproxy/envoy/blob/main/security/postmortems/cve-2019-9900.md
- github.com/envoyproxy/envoy/issues/6435
- github.com/envoyproxy/envoy/pull/6519/commits/e668e669677e52a00d99652b5a260d1cedafdfa8
- github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w
- groups.google.com/forum/
- nvd.nist.gov/vuln/detail/CVE-2019-9901
- www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history
Code Behaviors & Features
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