biscuitsec biscuit-go CVE-2022-31053 in Biscuitsec and Clever Cloud Products
Published on June 13, 2022

Signature forgery in Biscuit

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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 ?-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.

Github Repository NVD

Vulnerability Analysis

CVE-2022-31053 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

Improper Verification of Cryptographic Signature

The software does not verify, or incorrectly verifies, the cryptographic signature for data.


Products Associated with CVE-2022-31053

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2022-31053 are published in these products:

Biscuitsec Biscuit Go
 
Biscuitsec Biscuit Haskell
 
Biscuitsec Biscuit Auth
 
Clever Cloud Biscuit Java
 

Affected Versions

biscuit-auth biscuit:

Vulnerable Packages

The following package name and versions may be associated with CVE-2022-31053

Package Manager Vulnerable Package Versions Fixed In
maven com.clever-cloud:biscuit-java < 2.0.0 2.0.0

Exploit Probability

EPSS
0.29%
Percentile
52.62%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.