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8 vulnerabilities by biscuit-auth
CVE-2024-42350 (GCVE-0-2024-42350)
Vulnerability from cvelistv5 – Published: 2024-08-05 19:47 – Updated: 2024-08-05 20:23
VLAI
Title
Public key confusion in third party block in Biscuit
Summary
Biscuit is an authorization token with decentralized verification, offline attenuation and strong security policy enforcement based on a logic language. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a `ThirdPartyBlock` request can be sent, providing only the necessary info to generate a third-party block and to sign it: 1. the public key of the previous block (used in the signature), 2. the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair. Tokens with third-party blocks containing `trusted` annotations generated through a third party block request. This has been addressed in version 4 of the specification. Users are advised to update their implementations to conform. There are no known workarounds for this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-668 - Exposure of Resource to Wrong Sphere
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit/security/… | x_refsource_CONFIRM |
| https://github.com/biscuit-auth/biscuit/commit/c8… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit |
Affected:
< 4
|
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CVE-2024-41948 (GCVE-0-2024-41948)
Vulnerability from cvelistv5 – Published: 2024-08-01 22:03 – Updated: 2024-08-07 14:59
VLAI
Title
biscuit-java vulnerable to public key confusion in third party block
Summary
biscuit-java is the java implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair. This vulnerability is fixed in 4.0.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1259 - Improper Restriction of Security Token Assignment
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit-java/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit-java |
Affected:
>= 3.0.0, < 4.0.0
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CVE-2024-41949 (GCVE-0-2024-41949)
Vulnerability from cvelistv5 – Published: 2024-08-01 22:03 – Updated: 2024-08-02 14:49
VLAI
Title
biscuit-rust vulnerable to public key confusion in third party block
Summary
biscuit-rust is the Rust implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit-rust/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit-rust |
Affected:
< 5.0.0
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CVE-2022-31053 (GCVE-0-2022-31053)
Vulnerability from cvelistv5 – Published: 2022-06-13 19:35 – Updated: 2025-04-22 17:54
VLAI
Title
Signature forgery in Biscuit
Summary
Biscuit is an authentication and authorization token for microservices architectures. The Biscuit specification version 1 contains a vulnerable algorithm that allows malicious actors to forge valid Γ-signatures. Such an attack would allow an attacker to create a token with any access level. The version 2 of the specification mandates a different algorithm than gamma signatures and as such is not affected by this vulnerability. The Biscuit implementations in Rust, Haskell, Go, Java and Javascript all have published versions following the v2 specification. There are no known workarounds for this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit/security/… | x_refsource_CONFIRM |
| https://eprint.iacr.org/2020/1484 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit |
Affected:
biscuit-auth >= 1.0.0, < 2.0.0
Affected: biscuit-haskell = 0.1.1.0 Affected: com.clever-cloud.biscuit-java < 2.0.0 Affected: github.com/biscuit-auth/biscuit-go < 2.0 |
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CVE-2024-42350 (GCVE-0-2024-42350)
Vulnerability from nvd – Published: 2024-08-05 19:47 – Updated: 2024-08-05 20:23
VLAI
Title
Public key confusion in third party block in Biscuit
Summary
Biscuit is an authorization token with decentralized verification, offline attenuation and strong security policy enforcement based on a logic language. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a `ThirdPartyBlock` request can be sent, providing only the necessary info to generate a third-party block and to sign it: 1. the public key of the previous block (used in the signature), 2. the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair. Tokens with third-party blocks containing `trusted` annotations generated through a third party block request. This has been addressed in version 4 of the specification. Users are advised to update their implementations to conform. There are no known workarounds for this vulnerability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-668 - Exposure of Resource to Wrong Sphere
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit/security/… | x_refsource_CONFIRM |
| https://github.com/biscuit-auth/biscuit/commit/c8… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit |
Affected:
< 4
|
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CVE-2024-41948 (GCVE-0-2024-41948)
Vulnerability from nvd – Published: 2024-08-01 22:03 – Updated: 2024-08-07 14:59
VLAI
Title
biscuit-java vulnerable to public key confusion in third party block
Summary
biscuit-java is the java implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair. This vulnerability is fixed in 4.0.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1259 - Improper Restriction of Security Token Assignment
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit-java/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit-java |
Affected:
>= 3.0.0, < 4.0.0
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CVE-2024-41949 (GCVE-0-2024-41949)
Vulnerability from nvd – Published: 2024-08-01 22:03 – Updated: 2024-08-02 14:49
VLAI
Title
biscuit-rust vulnerable to public key confusion in third party block
Summary
biscuit-rust is the Rust implementation of Biscuit, an authentication and authorization token for microservices architectures. Third-party blocks can be generated without transferring the whole token to the third-party authority. Instead, a ThirdPartyBlock request can be sent, providing only the necessary info to generate a third-party block and to sign it, which includes the public key of the previous block (used in the signature) and the public keys part of the token symbol table (for public key interning in datalog expressions). A third-part block request forged by a malicious user can trick the third-party authority into generating datalog trusting the wrong keypair.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit-rust/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit-rust |
Affected:
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CVE-2022-31053 (GCVE-0-2022-31053)
Vulnerability from nvd – Published: 2022-06-13 19:35 – Updated: 2025-04-22 17:54
VLAI
Title
Signature forgery in Biscuit
Summary
Biscuit is an authentication and authorization token for microservices architectures. The Biscuit specification version 1 contains a vulnerable algorithm that allows malicious actors to forge valid Γ-signatures. Such an attack would allow an attacker to create a token with any access level. The version 2 of the specification mandates a different algorithm than gamma signatures and as such is not affected by this vulnerability. The Biscuit implementations in Rust, Haskell, Go, Java and Javascript all have published versions following the v2 specification. There are no known workarounds for this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/biscuit-auth/biscuit/security/… | x_refsource_CONFIRM |
| https://eprint.iacr.org/2020/1484 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| biscuit-auth | biscuit |
Affected:
biscuit-auth >= 1.0.0, < 2.0.0
Affected: biscuit-haskell = 0.1.1.0 Affected: com.clever-cloud.biscuit-java < 2.0.0 Affected: github.com/biscuit-auth/biscuit-go < 2.0 |
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"name": "https://github.com/biscuit-auth/biscuit/security/advisories/GHSA-75rw-34q6-72cr",
"refsource": "CONFIRM",
"url": "https://github.com/biscuit-auth/biscuit/security/advisories/GHSA-75rw-34q6-72cr"
},
{
"name": "https://eprint.iacr.org/2020/1484",
"refsource": "MISC",
"url": "https://eprint.iacr.org/2020/1484"
}
]
},
"source": {
"advisory": "GHSA-75rw-34q6-72cr",
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2022-31053",
"datePublished": "2022-06-13T19:35:10.000Z",
"dateReserved": "2022-05-18T00:00:00.000Z",
"dateUpdated": "2025-04-22T17:54:16.990Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}