// For flags

CVE-2024-23327

Crash in proxy protocol when command type of LOCAL in Envoy

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Envoy is a high-performance edge/middle/service proxy. When PPv2 is enabled both on a listener and subsequent cluster, the Envoy instance will segfault when attempting to craft the upstream PPv2 header. This occurs when the downstream request has a command type of LOCAL and does not have the protocol block. This issue has been addressed in releases 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.

Envoy es un proxy de servicio/intermedio/perimetral de alto rendimiento. Cuando PPv2 está habilitado tanto en un oyente como en un clúster posterior, la instancia de Envoy generará un error de segmentación al intentar crear el encabezado PPv2 ascendente. Esto ocurre cuando la solicitud descendente tiene un tipo de comando LOCAL y no tiene el bloque de protocolo. Este problema se solucionó en las versiones 1.29.1, 1.28.1, 1.27.3 y 1.26.7. Se recomienda a los usuarios que actualicen. No se conocen workarounds para esta vulnerabilidad.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2024-01-15 CVE Reserved
  • 2024-02-09 CVE Published
  • 2024-02-15 EPSS Updated
  • 2024-08-01 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 >= 1.26.0 < 1.26.7
Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.26.0 < 1.26.7"
-
Affected
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 >= 1.27.0 < 1.27.3
Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.27.0 < 1.27.3"
-
Affected
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 >= 1.28.0 < 1.28.1
Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.28.0 < 1.28.1"
-
Affected
Envoyproxy
Search vendor "Envoyproxy"
 Envoy
Search vendor "Envoyproxy" for product "Envoy"
 >= 1.29.0 < 1.29.1
Search vendor "Envoyproxy" for product "Envoy" and version " >= 1.29.0 < 1.29.1"
-
Affected