CVEvulnerability
CVE-2019-9901
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2019-04-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 6.5 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
- CVSS 3.0 ([email protected])
- 10.0 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-706
Description
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.
Affected configurations
• envoyproxy envoy (<= 1.9.0)
Related
Weakness · CWE (1)
- CWE-706 Use of Incorrectly-Resolved Name or Reference weakness
References
- https://github.com/envoyproxy/envoy/issues/6435 Issue Tracking, Mitigation, Third Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w github.com
- https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM groups.google.com
- https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history Release Notes, Vendor Advisory
- https://github.com/envoyproxy/envoy/issues/6435 Issue Tracking, Mitigation, Third Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w github.com
- https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM groups.google.com
- https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history Release Notes, Vendor Advisory