CVE-2023-27487

Published Apr 4, 2023

Last updated 2 years ago

Overview

Description: Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the client may bypass JSON Web Token (JWT) checks and forge fake original paths. The header `x-envoy-original-path` should be an internal header, but Envoy does not remove this header from the request at the beginning of request processing when it is sent from an untrusted client. The faked header would then be used for trace logs and grpc logs, as well as used in the URL used for `jwt_authn` checks if the `jwt_authn` filter is used, and any other upstream use of the x-envoy-original-path header. Attackers may forge a trusted `x-envoy-original-path` header. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 have patches for this issue.
Source: security-advisories@github.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 9.1
Impact score: 5.2
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: CRITICAL

Weaknesses

nvd@nist.gov: NVD-CWE-noinfo
security-advisories@github.com: CWE-20

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DAD93214-C958-4A69-9291-15D1C22CFD3F",
            "versionEndExcluding": "1.22.9"
          },
          {
            "criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "17BFB303-DA5A-4E83-93F7-3C1EA340E434",
            "versionEndExcluding": "1.23.6",
            "versionStartIncluding": "1.23.0"
          },
          {
            "criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "92B633B8-FA4A-4630-9302-96F2C8336E36",
            "versionEndExcluding": "1.24.4",
            "versionStartIncluding": "1.24.0"
          },
          {
            "criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "8AFC6741-6FDF-47F6-A4AF-B5F5233ABB71",
            "versionEndExcluding": "1.25.3",
            "versionStartIncluding": "1.25.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

References