swagger-api / swagger-api/swagger-codegen

CVE-2021-27568 (High) detected in json-smart-2.3.jar

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Description

CVE-2021-27568 - High Severity Vulnerability

Vulnerable Library - json-smart-2.3.jar

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate. It is based on a subset of the JavaScript Programming Language, Standard ECMA-262 3rd Edition - December 1999. JSON is a text format that is completely language independent but uses conventions that are familiar to programmers of the C-family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. These properties make JSON an ideal data-interchange language.

Library home page: http://www.minidev.net/

Path to vulnerable library: /target/lib/json-smart-2.3.jar

Dependency Hierarchy:

  • json-smart-2.3.jar (Vulnerable Library)

Found in HEAD commit: 4b7a8d7d7384aa6a27d6309c35ade0916edae7ed

Found in base branch: 3.0.0

Vulnerability Details

An issue was discovered in netplex json-smart-v1 through 2015-10-23 and json-smart-v2 through 2.4. An exception is thrown from a function, but it is not caught, as demonstrated by NumberFormatException. When it is not caught, it may cause programs using the library to crash or expose sensitive information.

Publish Date: 2021-02-23

URL: CVE-2021-27568

CVSS 3 Score Details (9.1)

Base Score Metrics:

  • Exploitability Metrics:
    • Attack Vector: Network
    • Attack Complexity: Low
    • Privileges Required: None
    • User Interaction: None
    • Scope: Unchanged
  • Impact Metrics:
    • Confidentiality Impact: High
    • Integrity Impact: None
    • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2021-02-23

Fix Resolution: 2.3.1

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing the dependency that produces /target/lib/json-smart-2.3.jar in the 3.0.0 base branch and confirm where version 2.3 is declared. Upgrade it to the stated fixed version, 2.3.1, then verify the generated library no longer reports CVE-2021-27568.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
security
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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