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CVE-2022-31053— Signature forgery in Biscuit

Quick assessment

Affected
biscuit-auth biscuit
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Biscuit是委托的、去中心化的、基于能力的授权令牌。 Biscuit v1 版本存在数据伪造问题漏洞，该漏洞源于允许攻击者创建具有任何访问级别的令牌。

CVSS 9.8 · Critical EPSS 1.01% · P62

Possible ATT&CK Techniques 1 AI

T1556 · Modify Authentication Process
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I. Basic Information for CVE-2022-31053

Vulnerability Information
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Vulnerability Title
Signature forgery in Biscuit
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Biscuit 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Biscuit是委托的、去中心化的、基于能力的授权令牌。 Biscuit v1 版本存在数据伪造问题漏洞，该漏洞源于允许攻击者创建具有任何访问级别的令牌。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
biscuit-auth biscuit biscuit-auth >= 1.0.0, < 2.0.0 -

II. Public POCs for CVE-2022-31053

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III. Intelligence Information for CVE-2022-31053

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Vendor Advisories for CVE-2022-31053 (1)

Other References for CVE-2022-31053 (1)

IV. Related Vulnerabilities

Same product: biscuit
Same vendor: biscuit-auth
Same weakness: CWE-347

V. Comments for CVE-2022-31053

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