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CVE-2023-51774

Good to know:

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Date: December 24, 2023

The json-jwt (aka JSON::JWT) gem 1.16.3 for Ruby sometimes allows bypass of identity checks via a sign/encryption confusion attack. For example, JWE can sometimes be used to bypass JSON::JWT.decode.

Language: Ruby

Severity Score

Related Resources (9)

https://github.com/nov/json-jwt
https://github.com/nov/json-jwt/issues/120
https://github.com/nov/json-jwt/issues/121
https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.md
https://github.com/nov/json-jwt/commit/9c4d842a9465bd7960570ca326c3de79b4abc9d0
https://nvd.nist.gov/vuln/detail/CVE-2023-51774
https://github.com/nov/json-jwt/commit/593ea8bcaf2629048bad8c036191f2da0a2e713c
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/json-jwt/CVE-2023-51774.yml
https://www.mend.io/vulnerability-database/CVE-2023-51774

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Top Fix

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Upgrade to version json-jwt - 1.15.3.1;json-jwt - 1.16.6

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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