CVE-2022-32223 in Node.js
Summary
by MITRE • 07/14/2022
Node.js is vulnerable to Hijack Execution Flow: DLL Hijacking under certain conditions on Windows platforms.This vulnerability can be exploited if the victim has the following dependencies on a Windows machine:* OpenSSL has been installed and “C:\Program Files\Common Files\SSL\openssl.cnf” exists.Whenever the above conditions are present, `node.exe` will search for `providers.dll` in the current user directory.After that, `node.exe` will try to search for `providers.dll` by the DLL Search Order in Windows.It is possible for an attacker to place the malicious file `providers.dll` under a variety of paths and exploit this vulnerability.
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Analysis
by VulDB Data Team • 07/31/2022
The vulnerability identified as CVE-2022-32223 represents a critical DLL hijacking flaw in Node.js affecting Windows platforms, specifically exploiting the dynamic link library search order mechanism. This vulnerability falls under the broader category of hijacking execution flow attacks and is classified as CWE-426 according to the Common Weakness Enumeration framework. The flaw manifests when Node.js applications running on Windows encounter specific environmental conditions that trigger improper DLL resolution behavior, creating a pathway for malicious code execution.
The technical exploitation of this vulnerability hinges on specific dependency conditions within the Windows environment. When OpenSSL is installed and the configuration file "C:\Program Files\Common Files\SSL\openssl.cnf" exists, Node.js executable exhibits problematic behavior during DLL resolution. The node.exe process begins its search for the required "providers.dll" file in the current user directory, which represents a deviation from secure execution practices. This initial search path is followed by the standard Windows DLL search order mechanism, which includes the current directory, system directories, and other locations in a predetermined sequence.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a sophisticated method to achieve persistent system compromise. The attacker can place a malicious "providers.dll" file in various strategic locations within the search order, including the current working directory or other directories that Windows checks before reaching legitimate system locations. This approach leverages the Windows DLL search order exploitation technique, which is commonly referenced in the MITRE ATT&CK framework under the T1059.001 technique for execution through command and scripting interpreter. The vulnerability is particularly dangerous because it can be triggered through legitimate Node.js application execution, making it difficult to distinguish between benign and malicious activity.
Mitigation strategies for CVE-2022-32223 require a multi-layered approach focusing on both system hardening and application security. Organizations should implement strict DLL search order policies by ensuring that the current working directory is not included in the DLL search path for critical applications. The recommended solution involves updating Node.js to versions that address this specific vulnerability, as the maintainers have released patches that modify the DLL resolution behavior. Additionally, system administrators should conduct thorough inventory checks to identify and remove unnecessary OpenSSL installations that contribute to the vulnerable conditions. Security controls should include monitoring for suspicious DLL loading patterns and implementing application whitelisting policies to restrict which DLLs can be loaded by Node.js processes. The vulnerability demonstrates the importance of secure coding practices and proper DLL resolution mechanisms, aligning with security best practices outlined in the OWASP Top Ten and NIST cybersecurity frameworks.