CVE-2022-32971 in SUR Software
Summary
by MITRE • 02/16/2023
Improper authentication in the Intel(R) SUR software before version 2.4.8902 may allow a privileged user to potentially enable escalation of privilege via network access.
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Analysis
by VulDB Data Team • 03/18/2023
The vulnerability identified as CVE-2022-32971 represents a critical authentication flaw within Intel's SUR (Software Update Receiver) component that affects versions prior to 2.4.8902. This issue resides in the software's handling of privileged user authentication mechanisms, creating a potential pathway for malicious actors to escalate their privileges through network-based attacks. The vulnerability specifically targets the authentication process that governs access to sensitive system functions within the SUR software framework, which is designed to manage firmware updates and system configurations for Intel hardware platforms. The flaw essentially allows an authenticated user who has already gained initial access to the system to potentially bypass additional authentication layers and elevate their privileges to higher administrative levels. This type of vulnerability falls under the category of privilege escalation attacks and aligns with CWE-284 which addresses improper access control in software systems.
The technical implementation of this vulnerability stems from inadequate validation of authentication tokens and session management within the SUR software's authentication subsystem. When a user successfully authenticates to the system, the software fails to properly validate subsequent requests for elevated privileges, creating a window where network-based attacks can exploit this weakness. The vulnerability is particularly concerning because it requires only network access to exploit, meaning attackers do not need physical access to the device or direct system interaction. The authentication bypass occurs during the privilege escalation process, where the system fails to properly verify that the requesting user has legitimate authorization to perform administrative actions. This flaw is consistent with ATT&CK technique T1078 which covers valid accounts and privilege escalation through network-based attacks, and T1548 which addresses abuse of privileges and privilege escalation mechanisms.
The operational impact of CVE-2022-32971 extends beyond simple privilege escalation to potentially compromise entire system architectures that rely on the SUR software for firmware management and security updates. Organizations using affected Intel SUR software versions face significant risk of unauthorized system access, where attackers could gain administrative control over devices and potentially use this access to install malicious firmware, modify system configurations, or exfiltrate sensitive data. The vulnerability affects systems that utilize Intel's SUR software for managing update processes, which are commonly found in enterprise environments, embedded systems, and IoT devices. The network-based exploitation capability means that attackers can potentially target these systems from remote locations, making the vulnerability particularly dangerous for organizations with exposed network services or devices connected to untrusted networks. The impact is further amplified because the SUR software typically operates with elevated privileges and system-level access, making successful exploitation potentially devastating to overall system security posture.
Mitigation strategies for CVE-2022-32971 primarily focus on immediate software updates to versions 2.4.8902 and later, which contain the necessary patches to address the authentication flaw. Organizations should prioritize updating all affected systems and verify that the updates have been properly applied across their infrastructure. Network segmentation and access controls should be implemented to limit network access to systems running the SUR software, reducing the attack surface available to potential attackers. Security monitoring should be enhanced to detect unusual authentication patterns or privilege escalation attempts that might indicate exploitation of this vulnerability. Regular vulnerability assessments and penetration testing should be conducted to identify other potential authentication flaws within the system architecture. Additionally, implementing principle of least privilege access controls and multi-factor authentication mechanisms can provide additional layers of protection against exploitation attempts. Organizations should also review their firmware update processes and ensure that only authorized administrators can perform system updates, as the vulnerability could potentially be exploited to gain unauthorized access to update mechanisms themselves. The remediation process should include thorough testing of updated software to ensure that the patches do not introduce compatibility issues with existing system configurations while maintaining the security improvements necessary to address the vulnerability.