CVE-2022-30123 : Security Advisory and Response

A sequence injection vulnerability exists in Rack which could allow a possible shell escape in the Lint and CommonLogger components of Rack.

Understanding CVE-2022-30123

This CVE identified a vulnerability in Rack that could be exploited for a possible shell escape.

What is CVE-2022-30123?

CVE-2022-30123 is a sequence injection vulnerability found in versions of Rack <2.0.9.1, <2.1.4.1, and <2.2.3.1, allowing attackers to potentially execute a shell escape in the Lint and CommonLogger components.

The Impact of CVE-2022-30123

The impact of this vulnerability could lead to unauthorized shell escapes, enabling attackers to execute arbitrary code or commands on the affected system.

Technical Details of CVE-2022-30123

This section covers the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises due to improper neutralization of escape, meta, or control sequences (CWE-150) in the affected versions of Rack.

Affected Systems and Versions

Rack versions <2.0.9.1, <2.1.4.1, and <2.2.3.1 are confirmed to be affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious sequences to trigger a shell escape, potentially leading to unauthorized system access.

Mitigation and Prevention

Protecting systems from CVE-2022-30123 requires immediate action and long-term security practices.

Immediate Steps to Take

Update Rack to version 2.0.9.1, 2.1.4.1, or 2.2.3.1 to mitigate the vulnerability.
Monitor for any suspicious activities on the system.

Long-Term Security Practices

Regularly apply security patches and updates to all software components.
Implement strong access controls and monitoring mechanisms to detect and prevent unauthorized access.

Patching and Updates

Stay informed about security advisories and updates from relevant vendors and apply patches promptly to ensure the security of your systems.