CVE-2022-21653 : Security Advisory and Response

A hash collision vulnerability in typelevel jawn could lead to denial of service attacks. Learn about the impact, technical details, and mitigation strategies for CVE-2022-21653.

Understanding CVE-2022-21653

CVE-2022-21653 is a vulnerability in typelevel jawn that allows attackers to launch denial of service attacks due to hash collisions. It affects versions of jawn prior to 1.3.2.

What is CVE-2022-21653?

CVE-2022-21653 is a vulnerability in the JSON parser typelevel jawn. Attackers can exploit hash collisions to cause denial of service to applications using affected versions.

The Impact of CVE-2022-21653

The impact of CVE-2022-21653 is rated as MEDIUM. Attackers can leverage the vulnerability to disrupt the availability of applications that use typelevel jawn versions less than 1.3.2.

Technical Details of CVE-2022-21653

Here are the technical details related to CVE-2022-21653:

Vulnerability Description

Jawn is an open source JSON parser. Extenders of the

org.typelevel.jawn.SimpleFacade

and

org.typelevel.jawn.MutableFacade

who don't override

objectContext()

are vulnerable to a hash collision attack, leading to denial of service.

Affected Systems and Versions

The vulnerability affects versions of typelevel jawn prior to 1.3.2. Users are advised to upgrade to

jawn-parser-1.3.1

to mitigate the issue.

Exploitation Mechanism

Attackers can exploit the vulnerability by triggering hash collisions in applications that use typelevel jawn, impacting the availability of the systems.

Mitigation and Prevention

Protect your systems from CVE-2022-21653 by following these measures:

Immediate Steps to Take

Upgrade to

jawn-parser-1.3.1

to address the hash collision vulnerability.

Long-Term Security Practices

Regularly update your software to the latest versions to patch known vulnerabilities.

Patching and Updates

Stay informed about security advisories and update your systems promptly to mitigate potential risks.