CVE-2023-30845

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Source
https://cve.org/CVERecord?id=CVE-2023-30845
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-30845.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-30845
Aliases
  • GHSA-6qmp-9p95-fc5f
Published
2023-04-26T20:46:25.263Z
Modified
2025-11-29T14:14:02.923897Z
Severity
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
ESPv2 vulnerable to JWT authentication bypass via `X-HTTP-Method-Override` header
Details

ESPv2 is a service proxy that provides API management capabilities using Google Service Infrastructure. ESPv2 2.20.0 through 2.42.0 contains an authentication bypass vulnerability. API clients can craft a malicious X-HTTP-Method-Override header value to bypass JWT authentication in specific cases.

ESPv2 allows malicious requests to bypass authentication if both the conditions are true: The requested HTTP method is not in the API service definition (OpenAPI spec or gRPC google.api.http proto annotations, and the specified X-HTTP-Method-Override is a valid HTTP method in the API service definition. ESPv2 will forward the request to your backend without checking the JWT. Attackers can craft requests with a malicious X-HTTP-Method-Override value that allows them to bypass specifying JWTs. Restricting API access with API keys works as intended and is not affected by this vulnerability.

Upgrade deployments to release v2.43.0 or higher to receive a patch. This release ensures that JWT authentication occurs, even when the caller specifies x-http-method-override. x-http-method-override is still supported by v2.43.0+. API clients can continue sending this header to ESPv2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30845.json"
}
References

Affected packages

Git / github.com/googlecloudplatform/esp-v2

Affected ranges

Type
GIT
Repo
https://github.com/googlecloudplatform/esp-v2
Events
Introduced
5355f8f638825782c78e8b1342f9f96c98fda0fa
Fixed
0bcdfc024ce96b34db4e1b4f2211b509d9be93cd

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-30845.json"