OpenBao: Timing Side-Channel in Userpass Auth Method_CVE-2025-54999

3.7 / 10

LOW

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

Description

OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 0.1.0 through 2.3.1, when using OpenBao's userpass auth method, user enumeration was possible due to timing difference between non-existent users and users with stored credentials. This is independent of whether the supplied credentials were valid for the given user. This issue was fixed in version 2.3.2. To work around this issue, users may use another auth method or apply rate limiting quotas to limit the number of requests in a period of time: https://openbao.org/api-docs/system/rate-limit-quotas/.

Basic Information

ID CVE-2025-54999

Source GitHub_M

Published Aug 9, 2025 at 02:00

Affected Product

Vendor openbao

Product openbao

Version >= 0.1.0, < 2.3.2

Affected Versions openbao openbao >= 0.1.0, < 2.3.2

CWE Classification

CWE-203

References

{
    "lastseen": "",
    "description": "OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 0.1.0 through 2.3.1, when using OpenBao's userpass auth method, user enumeration was possible due to timing difference between non-existent users and users with stored credentials. This is independent of whether the supplied credentials were valid for the given user. This issue was fixed in version 2.3.2. To work around this issue, users may use another auth method or apply rate limiting quotas to limit the number of requests in a period of time: https://openbao.org/api-docs/system/rate-limit-quotas/.",
    "published": "2025-08-09T02:00:46.271Z",
    "modified": "2025-08-09T02:00:46.271Z",
    "type": "cve",
    "title": "OpenBao: Timing Side-Channel in Userpass Auth Method",
    "source": "GitHub_M",
    "references": "https://github.com/openbao/openbao/security/advisories/GHSA-hh28-h22f-8357\nhttps://github.com/openbao/openbao/commit/4d9b5d3d6486ab9fbd5b644173fa0097015d6626\nhttps://discuss.hashicorp.com/t/hcsec-2025-15-timing-side-channel-in-vault-s-userpass-auth-method/76034\nhttps://discuss.hashicorp.com/t/hcsec-2025-21-vault-user-enumeration-in-userpass-auth-method/76095",
    "id": "CVE-2025-54999",
    "bulletinFamily": "",
    "cwe": [
        "CWE-203"
    ],
    "cvelist": null,
    "sourceData": "openbao openbao >= 0.1.0, < 2.3.2",
    "sourceHref": "",
    "cvss": {
        "score": 3.7,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "openbao",
    "version": ">= 0.1.0, < 2.3.2",
    "vendor": "openbao",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}