CVE-2022-28696 in Distribution for Python
Summary
by MITRE • 08/19/2022
Uncontrolled search path in the Intel(R) Distribution for Python before version 2022.0.3 may allow an authenticated user to potentially enable escalation of privilege via local access.
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Analysis
by VulDB Data Team • 08/19/2022
The vulnerability identified as CVE-2022-28696 resides within the Intel(R) Distribution for Python software suite, specifically affecting versions prior to 2022.0.3. This issue represents a classic uncontrolled search path vulnerability that manifests when the software fails to properly validate or sanitize the paths it searches for executable files or libraries. The flaw occurs during the software's initialization or execution phase where it relies on environment variables or configuration settings to determine search directories without adequate input validation. This creates an opportunity for malicious actors to manipulate the software's execution flow by placing malicious code in directories that are searched before legitimate system directories.
The technical implementation of this vulnerability stems from improper handling of the dynamic link library search order within the python runtime environment. When the software executes, it traverses a predetermined list of directories to locate required libraries or executables, but does not properly validate the integrity or origin of these paths. This behavior aligns with CWE-427, which specifically addresses uncontrolled search path conditions where a program searches for files in directories that can be manipulated by an attacker. The vulnerability is particularly concerning because it requires only local authentication, meaning that an authenticated user with access to the system can exploit this weakness without requiring additional privileges or network access.
From an operational perspective, this vulnerability creates a significant risk for privilege escalation attacks within the context of local system access. An authenticated user who can manipulate the environment variables or directory structure can potentially inject malicious code that will be executed with the privileges of the target process. This type of vulnerability falls under the ATT&CK framework's privilege escalation techniques, specifically targeting the "Dynamic Link Library Injection" and "Path Interception" tactics. The impact extends beyond simple local code execution as it can potentially allow attackers to establish persistent access or move laterally within a compromised system. The vulnerability is particularly dangerous in enterprise environments where multiple users may have legitimate access to the system but could leverage this weakness to gain elevated privileges.
Mitigation strategies for CVE-2022-28696 should focus on immediate software updates to version 2022.0.3 or later, which includes proper path validation and sanitization mechanisms. Organizations should also implement strict environment variable controls and audit directory permissions to prevent unauthorized modifications to search paths. System administrators should monitor for unusual process execution patterns and implement least privilege principles to limit the potential impact of successful exploitation. Additionally, security teams should conduct comprehensive vulnerability assessments to identify other instances of similar search path vulnerabilities within the software ecosystem. The remediation process should include thorough testing to ensure that the update does not introduce compatibility issues while maintaining the integrity of the python environment. Regular security monitoring and patch management processes should be reinforced to prevent similar vulnerabilities from emerging in other components of the software stack.