CVE Vulnerabilities

CVE-2022-36038

Deserialization of Untrusted Data

Published: Sep 06, 2022 | Modified: Sep 09, 2022
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

CircuitVerse is an open-source platform which allows users to construct digital logic circuits online. A remote code execution (RCE) vulnerability in CircuitVerse allows authenticated attackers to execute arbitrary code via specially crafted JSON payloads. This issue may lead to Remote Code Execution (RCE). A patch is available in commit number 7b3023a99499a7675f10f2c1d9effdf10c35fb6e. There are currently no known workarounds.

Weakness

The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Affected Software

Name Vendor Start Version End Version
Circuitverse Circuitverse - (including) - (including)

Extended Description

It is often convenient to serialize objects for communication or to save them for later use. However, deserialized data or code can often be modified without using the provided accessor functions if it does not use cryptography to protect itself. Furthermore, any cryptography would still be client-side security – which is a dangerous security assumption. Data that is untrusted can not be trusted to be well-formed. When developers place no restrictions on “gadget chains,” or series of instances and method invocations that can self-execute during the deserialization process (i.e., before the object is returned to the caller), it is sometimes possible for attackers to leverage them to perform unauthorized actions, like generating a shell.

Potential Mitigations

  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

References