CVE-2019-9901

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 v3.0 10.0 CRITICAL
CVSS v2.0 7.5 HIGH

10.0^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector : AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.envoyproxy.io/docs/envoy/v1.9.1/intro/version_history	Release Notes Vendor Advisory
https://groups.google.com/forum/#!topic/envoy-announce/VoHfnDqZiAM	Patch Third Party Advisory
https://github.com/envoyproxy/envoy/issues/6435	Mitigation Issue Tracking Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w

Configurations

Configuration 1 (hide)

cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*

Information

Published : 2019-04-25 09:29

Updated : 2020-08-24 10:37

NVD link : CVE-2019-9901

Mitre link : CVE-2019-9901

JSON object : View

CWE

CWE-706

Use of Incorrectly-Resolved Name or Reference

Products Affected

envoyproxy

envoy

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10.0 /10