CVE-2024-32976 Envoy can enter an endless loop while decompressing Brotli data with extra input

2024-06-0420:59:59

CWE-835

GitHub_M

github.com

envoy

endless loop

brotli

filter

decompression

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.8

Confidence

Low

SSVC

Exploitation

poc

Automatable

yes

Technical Impact

partial

JSON

Envoy is a cloud-native, open source edge and service proxy. Envoyproxy with a Brotli filter can get into an endless loop during decompression of Brotli data with extra input.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*"
    ],
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "status": "affected",
        "version": "1.30.0",
        "versionType": "custom",
        "lessThanOrEqual": "1.30.1"
      },
      {
        "status": "affected",
        "version": "1.29.0",
        "versionType": "custom",
        "lessThanOrEqual": "1.29.4"
      },
      {
        "status": "affected",
        "version": "1.28.0",
        "versionType": "custom",
        "lessThanOrEqual": "1.28.3"
      },
      {
        "status": "affected",
        "version": "1.18.0",
        "versionType": "custom",
        "lessThanOrEqual": "1.27.5"
      }
    ],
    "defaultStatus": "unknown"
  }
]