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GHSA-97x9-59rv-q5pm
No affected components available
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.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a low impact on the availability of the system.
Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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