github - ghsa-pcj4-9fcj-56c8

GHSA-PCJ4-9FCJ-56C8

Vulnerability from github – Published: 2025-03-03 18:31 – Updated: 2025-04-25 15:31

Details

OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.

Severity ?

6.9 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-27370"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-305",
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-03T18:15:40Z",
    "severity": "MODERATE"
  },
  "details": "OpenID Connect Core through 1.0 errata set 2 allows audience injection in certain situations. When the private_key_jwt authentication mechanism is used, a malicious Authorization Server could trick a Client into writing attacker-controlled values into the audience, including token endpoints or issuer identifiers of other Authorization Servers. The malicious Authorization Server could then use these private key JWTs to impersonate the Client.",
  "id": "GHSA-pcj4-9fcj-56c8",
  "modified": "2025-04-25T15:31:20Z",
  "published": "2025-03-03T18:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-27370"
    },
    {
      "type": "WEB",
      "url": "https://github.com/OWASP/ASVS/issues/2678"
    },
    {
      "type": "WEB",
      "url": "https://eprint.iacr.org/2025/629"
    },
    {
      "type": "WEB",
      "url": "https://openid.net/notice-of-a-security-vulnerability"
    },
    {
      "type": "WEB",
      "url": "https://openid.net/wp-content/uploads/2025/01/OIDF-Responsible-Disclosure-Notice-on-Security-Vulnerability-for-private_key_jwt.pdf"
    },
    {
      "type": "WEB",
      "url": "https://talks.secworkshop.events/osw2025/talk/R8D9BS"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-27370 (GCVE-0-2025-27370)

Vulnerability from cvelistv5 – Published: 2025-03-03 00:00 – Updated: 2025-04-25 14:43

Summary

Severity ?

6.9 (Medium)


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

CWE

CWE-305 - Authentication Bypass by Primary Weakness

Assigner

mitre

References

URL

Tags

	https://openid.net/wp-content/uploads/2025/01/OID…
	https://openid.net/notice-of-a-security-vulnerability/
	https://talks.secworkshop.events/osw2025/talk/R8D9BS/
	https://github.com/OWASP/ASVS/issues/2678
	https://eprint.iacr.org/2025/629

Impacted products

	Vendor	Product	Version
	OpenID	OpenID Connect	Affected: 0 , ≤ 1.0 errata set 2 (custom)

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JSON

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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2025-03-04T16:59:06.842747Z",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-PCJ4-9FCJ-56C8

CVE-2025-27370 (GCVE-0-2025-27370)

Tags

Sightings

Nomenclature