CVE-2019-9901

State: Published
Severity: 6.5 Medium
Published: Apr 25, 2019
Updated: Aug 4, 2024
Reserved: Mar 21, 2019

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.

Scores

CVSS	Score	Vector	Source
3.0	6.5 Medium	CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N	mitre

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history
https://github.com/envoyproxy/envoy/issues/6435
https://groups.google.com/forum/#%21topic/envoy-announce/VoHfnDqZiAM
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w

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