CVE-2022-24795 : What You Need to Know

A buffer overflow and integer overflow vulnerability in yajl-ruby can lead to heap memory corruption when processing large inputs.

Understanding CVE-2022-24795

This CVE involves an integer overflow issue in the

yajl-ruby

library, impacting process availability due to subsequent heap memory corruption when dealing with large inputs.

What is CVE-2022-24795?

The

1.x

and

2.x

branches of

yajl

suffer from an integer overflow bug that triggers heap memory corruption during reallocation when large inputs (~2GB) are processed. The vulnerability impacts process availability, with exploitation for arbitrary code execution deemed unlikely.

The Impact of CVE-2022-24795

The vulnerability mainly affects process availability by leading to heap memory corruption. Maintainers expect the exploitation for arbitrary code execution to be improbable.

Technical Details of CVE-2022-24795

Vulnerability Description

The issue arises due to integer wrapping to 0 when handling large inputs, causing subsequent heap memory corruption during reallocation.

Affected Systems and Versions

Vendor

brianmario

's product

yajl-ruby

versions

<= 1.4.1

are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability triggers when

need

approaches the value of

0x80000000

(~2GB of data), causing reallocation of heap chunks and subsequent memory corruption.

Mitigation and Prevention

Immediate Steps to Take

A patch is available for this vulnerability and is expected to be included in

yajl-ruby

version

1.4.2

. As a workaround, avoid processing large inputs with

YAJL

.

Long-Term Security Practices

Maintain a proactive security posture by regularly updating software and libraries to prevent such vulnerabilities.

Patching and Updates

Apply the available patch promptly and monitor official sources for the release of fixed versions.