CVE-2024-23324CWE-20

Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata

High · published February 9, 2024

CVSS v3.1
8.6
EPSS
1%
Percentile
48.1
In the wild
Unconfirmed
What it is

Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00600 · 48.1th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2024-02-09T22:48Z
EPSS history
Timeline
  • 09 FEB 22:48Z
    Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata
    cvelistv5