CVE-2022-35173 : Security Advisory and Response

An issue was discovered in Nginx NJS v0.7.5 where the JUMP offset for a break instruction was not set to a correct offset during code generation, leading to a segmentation violation.

Understanding CVE-2022-35173

This CVE involves a vulnerability in Nginx NJS v0.7.5 related to incorrect offset setting for a break instruction.

What is CVE-2022-35173?

CVE-2022-35173 is a specific vulnerability identified in Nginx NJS v0.7.5 where the JUMP offset for a break instruction was not correctly set during code generation, resulting in a segmentation violation.

The Impact of CVE-2022-35173

This vulnerability could be exploited by attackers to cause a segmentation violation, potentially leading to a denial of service (DoS) condition or other security issues.

Technical Details of CVE-2022-35173

This section provides more detailed technical insights into the CVE.

Vulnerability Description

The vulnerability lies in the incorrect setting of the JUMP offset for a break instruction in Nginx NJS v0.7.5, introducing the possibility of a segmentation violation.

Affected Systems and Versions

The issue affects Nginx NJS v0.7.5 versions.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability to trigger a segmentation violation by manipulating the break instruction in the code.

Mitigation and Prevention

To address CVE-2022-35173, users and administrators should follow these mitigation steps.

Immediate Steps to Take

Update Nginx NJS to a patched version that corrects the offset issue.
Monitor for any unusual activity or signs of exploitation related to this vulnerability.

Long-Term Security Practices

Regularly update software components to the latest versions to prevent known vulnerabilities from being exploited.
Implement proper code review processes to catch such issues during development stages.

Patching and Updates

Stay informed about security updates and patches released by the Nginx NJS project to address CVE-2022-35173.