CVE-2022-26650 : What You Need to Know

Apache ShenYu (incubating) Regular expression denial of service

Understanding CVE-2022-26650

This CVE involves Apache ShenYu (incubating) versions less than 2.4.3, where a vulnerability in ShenYu-Bootstrap can be exploited by attackers to cause resource exhaustion using malicious regular expressions.

What is CVE-2022-26650?

CVE-2022-26650 is a vulnerability in Apache ShenYu (incubating) versions 2.4.0, 2.4.1, and 2.4.2, allowing attackers to exhaust resources with malicious regular expressions in ShenYu-Bootstrap.

The Impact of CVE-2022-26650

The impact of this CVE is considered moderate, as it can lead to resource exhaustion within affected Apache ShenYu (incubating) systems.

Technical Details of CVE-2022-26650

Vulnerability Description

In Apache ShenYu (incubating), the RegexPredicateJudge.java uses controllable parameters, allowing attackers to pass in malicious regular expressions, causing resource exhaustion.

Affected Systems and Versions

The vulnerability affects Apache ShenYu (incubating) versions 2.4.0, 2.4.1, and 2.4.2, with versions less than 2.4.3 being vulnerable.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating parameters in ShenYu-Bootstrap with malicious regular expressions.

Mitigation and Preventions

Immediate Steps to Take

Users are advised to upgrade to Apache ShenYu (incubating) version 2.4.3 to mitigate the vulnerability. Alternatively, applying the provided patch can also address the issue.

Long-Term Security Practices

To enhance security posture, organizations should keep software up to date, implement secure coding practices, and conduct regular security assessments.

Patching and Updates

Regularly check for security updates and patches from Apache Software Foundation to stay protected against known vulnerabilities.