CVE-2022-0074 in OpenLiteSpeed
Summary
by MITRE • 10/28/2022
Untrusted Search Path vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server Container allows Privilege Escalation. This affects versions from 1.6.15 before 1.7.16.1.
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Analysis
by VulDB Data Team • 10/28/2022
The vulnerability CVE-2022-0074 represents a critical untrusted search path issue within the LiteSpeed Technologies OpenLiteSpeed Web Server container environment that enables privilege escalation attacks. This flaw exists in versions ranging from 1.6.15 through 1.7.16.0, creating a significant security risk for systems utilizing this web server implementation. The vulnerability stems from improper handling of the system search path during application execution, where the software fails to validate or sanitize the paths used to locate required libraries and executables. This weakness allows malicious actors to manipulate the execution environment and potentially execute arbitrary code with elevated privileges.
The technical implementation of this vulnerability involves the web server's failure to properly enforce secure library loading mechanisms. When the OpenLiteSpeed container processes requests, it relies on a specific search path to locate shared libraries and executable components. Attackers can exploit this by placing malicious libraries in directories that are searched before legitimate system paths, effectively hijacking the execution flow. The vulnerability is categorized under CWE-427 Uncontrolled Search Path Element, which specifically addresses the dangerous practice of allowing external or untrusted elements to be included in the search path without proper validation. This flaw directly enables attackers to bypass normal security controls and gain unauthorized access to system resources.
The operational impact of CVE-2022-0074 extends beyond simple privilege escalation, creating a comprehensive attack surface that can be leveraged for further compromise. Systems running affected versions of OpenLiteSpeed become vulnerable to various attack vectors including remote code execution, data exfiltration, and persistent backdoor installation. The vulnerability is particularly dangerous in containerized environments where the web server typically operates with elevated privileges to manage system resources effectively. Attackers can exploit this weakness to elevate their privileges from standard user access to root or administrative levels, potentially compromising the entire container host and underlying infrastructure. This vulnerability aligns with ATT&CK technique T1068 Privilege Escalation through the use of insecure library loading practices that allow attackers to execute code with higher privileges than initially intended.
Organizations should immediately implement mitigations including updating to version 1.7.16.1 or later, which contains the necessary patches to address the untrusted search path vulnerability. System administrators should also implement additional security controls such as enabling strict library loading policies, implementing proper path sanitization, and conducting regular security audits of container environments. The remediation process requires careful attention to ensure that all instances of the affected web server are updated consistently across the infrastructure. Security teams should monitor for exploitation attempts through network traffic analysis and system logs, as the vulnerability may be targeted by automated scanning tools. Additionally, implementing container security best practices such as running containers with reduced privileges and employing proper access controls can significantly reduce the potential impact of this vulnerability. The incident highlights the critical importance of maintaining up-to-date software versions and following secure coding practices to prevent similar vulnerabilities from occurring in future implementations.