CVE-2024-21669: Hyperledger Aries Cloud Agent Python result of presentation verification not checked for LDP-VC

Impact

When verifying W3C Format Verifiable Credentials using JSON-LD with Linked Data Proofs (LDP-VCs), the result of verifying the presentation document.proof was not factored into the final verified value (true/false) on the presentation record. Below is an example result from verifying a JSON-LD Presentation where there is an error noted in the processing (mismatched challenge), but the overall result is incorrectly "verified": true:

{
 "verified": true,
 "presentation_result": {
  "verified": false,
  "document": {
   "@context": [
    "https://www.w3.org/2018/credentials/v1"
   ],
   "type": [
    "VerifiablePresentation"
   ],
   "verifiableCredential": [
    {
     "@context": [
      "https://www.w3.org/2018/credentials/v1",
      "https://w3id.org/citizenship/v1"
     ],
     "type": [
      "VerifiableCredential",
      "PermanentResident"
     ],
     "issuer": "did:sov:EzcfrVw7Tveho5NjrmDWnd",
     "issuanceDate": "2023-11-18",
     "credentialSubject": {
      "type": [
       "PermanentResident"
      ],
      "id": "did:key:z6MkrpbudRMUpTWSdqFcG2ytbYu2QQfgGFUf8GJpShR8Gy7C",
      "givenName": "Bob",
      "familyName": "Builder",
      "gender": "Male",
      "birthCountry": "Bahamas",
      "birthDate": "1958-07-17"
     },
     "proof": {
      "type": "Ed25519Signature2018",
      "proofPurpose": "assertionMethod",
      "verificationMethod": "did:sov:EzcfrVw7Tveho5NjrmDWnd#key-1",
      "created": "2023-11-18T21:39:56.988853+00:00",
      "jws": "eyJhbGciOiAiRWREU0EiLCAiYjY0IjogZmFsc2UsICJjcml0IjogWyJiNjQiXX0..eKdLMhKJkiVNzTKOEv14KyAFJnk8QX5MqXPmRE5OjQvwRNkeXk1lQRovhDhXKw154OrSqLHgfSNwBd3xfwuDCA"
     }
    }
   ],
   "proof": {
    "type": "Ed25519Signature2018",
    "proofPurpose": "authentication",
    "verificationMethod": "did:key:z6MkrpbudRMUpTWSdqFcG2ytbYu2QQfgGFUf8GJpShR8Gy7C#z6MkrpbudRMUpTWSdqFcG2ytbYu2QQfgGFUf8GJpShR8Gy7C",
    "created": "2023-11-18T21:39:59.188276+00:00",
    "challenge": "ce0956d4-206d-4b69-a087-52bbb9ddaf1d",
    "jws": "eyJhbGciOiAiRWREU0EiLCAiYjY0IjogZmFsc2UsICJjcml0IjogWyJiNjQiXX0..4ciLzT3oF-Ch9nngGVgI_fBNIo_RPPXzRuFXjMx4AdwVNM4ioeB3TNDbHsF7fPXANznkZR0bHceyvMN3-CUSAw"
   }
  },
  "results": [
   {
    "verified": false,
    "proof": {
     "@context": [
      "https://www.w3.org/2018/credentials/v1"
     ],
     "type": "Ed25519Signature2018",
     "proofPurpose": "authentication",
     "verificationMethod": "did:key:z6MkrpbudRMUpTWSdqFcG2ytbYu2QQfgGFUf8GJpShR8Gy7C#z6MkrpbudRMUpTWSdqFcG2ytbYu2QQfgGFUf8GJpShR8Gy7C",
     "created": "2023-11-18T21:39:59.188276+00:00",
     "challenge": "ce0956d4-206d-4b69-a087-52bbb9ddaf1d",
     "jws": "eyJhbGciOiAiRWREU0EiLCAiYjY0IjogZmFsc2UsICJjcml0IjogWyJiNjQiXX0..4ciLzT3oF-Ch9nngGVgI_fBNIo_RPPXzRuFXjMx4AdwVNM4ioeB3TNDbHsF7fPXANznkZR0bHceyvMN3-CUSAw"
    },
    "error": "The challenge is not as expected; challenge=ce0956d4-206d-4b69-a087-52bbb9ddaf1d, expected=328daf6e-f1f5-475a-944e-6446e7b3a969",
    "purpose_result": {
     "valid": false,
     "error": "The challenge is not as expected; challenge=ce0956d4-206d-4b69-a087-52bbb9ddaf1d, expected=328daf6e-f1f5-475a-944e-6446e7b3a969"
    }
   }
  ],
  "errors": [
   "The challenge is not as expected; challenge=ce0956d4-206d-4b69-a087-52bbb9ddaf1d, expected=328daf6e-f1f5-475a-944e-6446e7b3a969"
  ]
 },
 "credential_results": [
  {
   "verified": true,
   "document": {
    "@context": [
     "https://www.w3.org/2018/credentials/v1",
     "https://w3id.org/citizenship/v1"
    ],
    "type": [
     "VerifiableCredential",
     "PermanentResident"
    ],
    "issuer": "did:sov:EzcfrVw7Tveho5NjrmDWnd",
    "issuanceDate": "2023-11-18",
    "credentialSubject": {
     "type": [
      "PermanentResident"
     ],
     "id": "did:key:z6MkrpbudRMUpTWSdqFcG2ytbYu2QQfgGFUf8GJpShR8Gy7C",
     "givenName": "Bob",
     "familyName": "Builder",
     "gender": "Male",
     "birthCountry": "Bahamas",
     "birthDate": "1958-07-17"
    },
    "proof": {
     "type": "Ed25519Signature2018",
     "proofPurpose": "assertionMethod",
     "verificationMethod": "did:sov:EzcfrVw7Tveho5NjrmDWnd#key-1",
     "created": "2023-11-18T21:39:56.988853+00:00",
     "jws": "eyJhbGciOiAiRWREU0EiLCAiYjY0IjogZmFsc2UsICJjcml0IjogWyJiNjQiXX0..eKdLMhKJkiVNzTKOEv14KyAFJnk8QX5MqXPmRE5OjQvwRNkeXk1lQRovhDhXKw154OrSqLHgfSNwBd3xfwuDCA"
    }
   },
   "results": [
    {
     "verified": true,
     "proof": {
      "@context": [
       "https://www.w3.org/2018/credentials/v1",
       "https://w3id.org/citizenship/v1"
      ],
      "type": "Ed25519Signature2018",
      "proofPurpose": "assertionMethod",
      "verificationMethod": "did:sov:EzcfrVw7Tveho5NjrmDWnd#key-1",
      "created": "2023-11-18T21:39:56.988853+00:00",
      "jws": "eyJhbGciOiAiRWREU0EiLCAiYjY0IjogZmFsc2UsICJjcml0IjogWyJiNjQiXX0..eKdLMhKJkiVNzTKOEv14KyAFJnk8QX5MqXPmRE5OjQvwRNkeXk1lQRovhDhXKw154OrSqLHgfSNwBd3xfwuDCA"
     },
     "purpose_result": {
      "valid": true,
      "controller": {
       "@context": "https://w3id.org/security/v2",
       "id": "did:sov:EzcfrVw7Tveho5NjrmDWnd",
       "assertionMethod": [
        "did:sov:EzcfrVw7Tveho5NjrmDWnd#key-1"
       ],
       "authentication": [
        {
         "id": "did:sov:EzcfrVw7Tveho5NjrmDWnd#key-1",
         "type": "Ed25519VerificationKey2018",
         "controller": "did:sov:EzcfrVw7Tveho5NjrmDWnd",
         "publicKeyBase58": "8dMkWKZxsK7vS8sR4XgS7gWvRawPp5TMYVFvnU2RyXqo"
        }
       ],
       "verificationMethod": "did:sov:EzcfrVw7Tveho5NjrmDWnd#key-1",
       "https://www.w3.org/ns/did#service": {
        "id": "did:sov:EzcfrVw7Tveho5NjrmDWnd#did-communication",
        "type": "did-communication",
        "https://www.w3.org/ns/did#serviceEndpoint": {
         "id": "http://alice:3000"
        }
       }
      }
     }
    }
   ]
  }
 ],
 "errors": [
  "The challenge is not as expected; challenge=ce0956d4-206d-4b69-a087-52bbb9ddaf1d, expected=328daf6e-f1f5-475a-944e-6446e7b3a969"
 ]
}

The flaw enables holders of W3C Format Verifiable Credentials using JSON-LD with Linked Data Proofs (LDPs) to present incorrectly constructed proofs, and allows malicious verifiers to save and replay a presentation from such holders as their own.

This vulnerability has been present since the first implementation of support for JSON-LD W3C Verifiable Credential Data Model presentations, in Aries Cloud Agent Python release in 0.7.0.

All ACA-Py Users depending on W3C Format Verifiable Credentials using JSON-LD with Linked Data Proofs are impacted by this vulnerability.

Patches

This issue has been patched in version 0.10.5 and fixed in 0.11.0.

Workarounds

There is no workaround other upgrading to a patched/fixed version of ACA-Py.

References

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