Authentication Bypass

2024-02-1209:56:23

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

envoyproxy

vulnerability

grpc

authentication

bypass

confidentiality

software

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

AI Score

Confidence

High

EPSS

0.001

Percentile

17.2%

JSON

github.com/envoyproxy/envoy is vulnerable to Authentication Bypass. The vulnerability is caused due to downstream clients being able to force invalid gRPC requests to ext_authz, thereby circumventing ext_authz checks when failure_mode_allow is set to true. This leads to external authentication getting bypassed by downstream connections which compromises confidentiality of the system.