Mitigation Instructions for CVE-2022-1292

SUBJECT: Mitigating CVE-2022-1292: Command Injection in OpenSSL c_rehash Script

TECH STACK: OpenSSL

DATE(S) ISSUED: 05/03/2022

NVD Last Modified: 11/06/2023

CRITICALITY: CRITICAL 9.8

OVERVIEW: 

This document outlines the steps to mitigate the vulnerability (CVE-2022-1292) in the OpenSSL c_rehash script. This script, used on some operating systems, is susceptible to command injection due to improper sanitization of shell metacharacters. An attacker could exploit this vulnerability to execute arbitrary commands with the privileges of the script.

SOLUTION/MITIGATION: 

• Upgrade OpenSSL: The recommended solution is to upgrade OpenSSL to a version that includes the fix for this vulnerability. 
• This includes:

• OpenSSL 3.0.3 (or later)
• OpenSSL 1.1.1o (or later)
• OpenSSL 1.0.2ze (or later)
• Disable the c_rehash script (if applicable):
  If upgrading OpenSSL is not immediately possible, consider disabling the c_rehash script. 

• This can be done by:

• Consulting your operating system's documentation for specific instructions.
• Caution: Disabling the script may have unintended consequences, so thoroughly understand its purpose and potential impact before taking this step.

Additional mitigation steps:

• Review logs: Monitor system logs for any suspicious activity, particularly around the execution of the c_rehash script.
• Implement network segmentation: Implement network segmentation to limit the potential impact of a successful attack.
• Least privilege: Implement the principle of least privilege to minimize the potential damage if an attacker gains access to the system.

Confirmation & Additional Information:

• Verify that the mitigation steps have been successfully implemented.
• Keep your systems up-to-date with the latest security patches, including OpenSSL updates.

REFERENCES:

1. https://www.openssl.org/news/secadv/20230207.txt
2. https://nvd.nist.gov/vuln/detail/CVE-2022-1292