The c_rehash script in OpenSSL is susceptible to command injection due to improper sanitization of shell metacharacters. This vulnerability, identified as CVE-2022-1292, can be exploited by attackers to execute arbitrary commands with the privileges of the script. Given its distribution in some operating systems, where it may be executed automatically, the impact can be severe. The vulnerability has been assigned a CVSS score of 7.3, categorizing it as high severity, and necessitating immediate attention from organizations.
Risk to organizations includes unauthorized access and potential system compromise. As the c_rehash script is considered obsolete, it should be replaced with the OpenSSL rehash command line tool. The vulnerability has been fixed in multiple versions of OpenSSL: 3.0.3 (affecting versions 3.0.0 to 3.0.2), 1.1.1o (affecting 1.1.1 to 1.1.1n), and 1.0.2ze (affecting 1.0.2 to 1.0.2zd).
Organizations should prioritize patching immediately. Failure to address this vulnerability places systems at significant risk, especially in environments where the vulnerable script is automatically executed. The urgency for action is compounded by the potential for widespread exploitation.
As of the latest information, the vulnerability is not listed in the Known Exploited Vulnerabilities (KEV) catalog, but public proof-of-concept (PoC) code has been found on GitHub. Security teams should ensure that their systems are updated to the latest versions to mitigate the risks associated with CVE-2022-1292.
Vulnerability Details
The c_rehash script does not properly sanitise shell metacharacters to prevent command injection. This script is distributed by some operating systems in a manner where it is automatically executed. On such operating systems, an attacker could execute arbitrary commands with the privileges of the script. Use of the c_rehash script is considered obsolete and should be replaced by the OpenSSL rehash command line tool. Fixed in OpenSSL 3.0.3 (Affected 3.0.0, 3.0.1, 3.0.2). Fixed in OpenSSL 1.1.1o (Affected 1.1.1 to 1.1.1n). Fixed in OpenSSL 1.0.2ze (Affected 1.0.2 to 1.0.2zd).
The CVSS score for this vulnerability is 7.3, indicating that it poses a high risk to organizations. The attack vector is local, and the attack complexity is low, requiring minimal privileges and user interaction. The potential for high impacts to confidentiality, integrity, and availability makes this vulnerability particularly concerning.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of shell metacharacters within the c_rehash script. This oversight allows attackers to inject malicious commands that can be executed with the same privileges as the script itself. The attack vector is primarily local, as the script is typically executed within the confines of the host system.
Given the low complexity of the attack, it becomes crucial for organizations to recognize the seriousness of this vulnerability. While user interaction may be required for exploitation, the potential consequences of successful attacks can be dire, impacting system confidentiality, integrity, and availability.
Risk & Impact Analysis
Real-world deployment risks associated with CVE-2022-1292 are significant, particularly for organizations that rely on the c_rehash script within their operations. The potential for arbitrary command execution can lead to unauthorized access, data breaches, and system compromise. The blast radius for such an exploit could extend to critical systems, exposing sensitive information and impacting organizational operations.
Organizations should assess their environments to determine if the vulnerable script is in use and prioritize remediation efforts based on the CVSS score of 7.3. The potential impact of exploitation, combined with the ease of execution, necessitates immediate action to mitigate risks.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Versions of OpenSSL affected by this vulnerability include: - 3.0.0 to 3.0.2 (fixed in 3.0.3) - 1.1.1 to 1.1.1n (fixed in 1.1.1o) - 1.0.2 to 1.0.2zd (fixed in 1.0.2ze) Additionally, various systems such as Debian Linux (versions 9, 10, and 11) and Siemens products are also affected.
Mitigation & Remediation
Organizations should patch their systems to the latest versions of OpenSSL: 3.0.3, 1.1.1o, or 1.0.2ze, depending on the version currently in use. For systems where immediate patching is not possible, consider disabling the c_rehash script and replacing it with the OpenSSL rehash command line tool. Additionally, implementing network controls and monitoring for unusual activity can help mitigate the risk of exploitation. Organizations may also consider engaging in penetration testing to validate the effectiveness of their remediation strategies.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts, including unexpected execution of the c_rehash script. Behavioral anomalies, such as unusual command executions or system changes, should also be investigated. Additionally, network signatures indicative of exploit attempts can help in early detection.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2022-1292 lies in the prevalence of command injection vulnerabilities in widely used scripts. This incident highlights the importance of reviewing and updating legacy systems to mitigate similar vulnerabilities. Security teams should take this opportunity to strengthen their review processes and ensure that obsolete scripts are not present in their environments.
To stay ahead of vulnerabilities, organizations should adopt a proactive approach. This includes regular audits of their systems and employing comprehensive security practices. Engaging in penetration testing methodology can provide valuable insights into potential risks and weaknesses.
Moreover, organizations should consider utilizing vulnerability management programs to continuously monitor and address security issues.
Finally, adopting a comprehensive cloud penetration testing guide can also enhance an organization's security posture against evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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