CVE-2023-35942 Envoy's gRPC access log crash caused by the listener draining

2023-07-2518:24:11

CWE-416

GitHub_M

www.cve.org

envoy

grpc

access log

listener draining

cve-2023-35942

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

20.3%

JSON

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener’s global scope can cause a use-after-free crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.

CNA Affected

[
  {
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "version": ">= 1.26.0, < 1.26.4",
        "status": "affected"
      },
      {
        "version": ">= 1.25.0, < 1.25.9",
        "status": "affected"
      },
      {
        "version": ">= 1.24.0, < 1.24.10",
        "status": "affected"
      },
      {
        "version": "< 1.23.12",
        "status": "affected"
      }
    ]
  }
]