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PHP JOSE Library by Gree Inc. Uses a Broken or Risky Cryptographic Algorithm

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Mar 11, 2023

Package

composer gree/jose (Composer)

Affected versions

< 2.2.1

Patched versions

2.2.1

Description

The PHP JOSE Library by Gree Inc. prior to 2.2.1 is vulnerable to key confusion/algorithm substitution in the JWS component resulting in bypassing the signature verification via crafted tokens.

References

Published by the National Vulnerability Database Aug 7, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Mar 3, 2023
Last updated Mar 11, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.084%
(37th percentile)

Weaknesses

CVE ID

CVE-2016-5431

GHSA ID

GHSA-xm5f-hc9r-76f3

Source code

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