CVE-2022-39224 : Exploit Details and Defense Strategies

Arbitrary shell execution when extracting or listing files contained in a malicious rpm.

Understanding CVE-2022-39224

This CVE impacts the

ruby-arr-pm

library versions prior to 0.0.12, allowing for OS command injection resulting in shell execution in specific scenarios.

What is CVE-2022-39224?

CVE-2022-39224 affects the

extract

and

files

methods of the

RPM::File

class in the

ruby-arr-pm

library. A malicious "payload compressor" field in an RPM can trigger this vulnerability.

The Impact of CVE-2022-39224

With a CVSS base score of 7 and high severity, this CVE poses a risk of arbitrary shell execution, impacting confidentiality, integrity, and availability. While no privileges are required, user interaction is necessary for exploitation.

Technical Details of CVE-2022-39224

This section delves deeper into the vulnerability specifics.

Vulnerability Description

The vulnerability arises from improper handling of malicious payload compressor fields in RPM files, leading to shell execution.

Affected Systems and Versions

The

ruby-arr-pm

library versions prior to 0.0.12 are vulnerable to this exploit.

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a malicious RPM file with a tainted payload compressor field.

Mitigation and Prevention

Explore the steps to mitigate and prevent potential attacks.

Immediate Steps to Take

Upgrade to version 0.0.12 of the

ruby-arr-pm

library to patch this vulnerability. Verify the payload compressor field in processed RPMs for known values.

Long-Term Security Practices

Enforce secure coding practices and regularly update libraries to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches and updates to safeguard against potential exploits.