CVE-2022-34404 in System Update
Summary
by MITRE • 02/11/2023
Dell System Update, version 2.0.0 and earlier, contains an Improper Certificate Validation in data parser module. A local attacker with high privileges could potentially exploit this vulnerability, leading to credential theft and/or denial of service.
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Analysis
by VulDB Data Team • 02/11/2023
The vulnerability identified as CVE-2022-34404 affects Dell System Update version 2.0.0 and earlier, representing a critical weakness in the software's certificate validation mechanisms within its data parser module. This flaw resides in the cryptographic validation process that should ensure the authenticity and integrity of data being processed by the system update utility. The issue stems from insufficient verification of digital certificates used to authenticate data sources, creating a potential attack vector that could be exploited by malicious actors with elevated privileges on the target system.
The technical implementation of this vulnerability manifests as improper certificate validation where the data parser module fails to adequately validate the cryptographic signatures and certificates associated with update data. This weakness allows an attacker with local high privileges to manipulate or bypass the certificate validation checks, potentially enabling them to inject malicious data or credentials into the system update process. The vulnerability operates at the intersection of certificate validation and data processing, where the parser module should enforce strict certificate chain validation but instead accepts potentially compromised certificates.
From an operational perspective, this vulnerability presents significant risks to system security and availability. A local attacker with elevated privileges could exploit the weakness to steal credentials from the system update process, potentially gaining access to sensitive authentication information. Additionally, the vulnerability could enable denial of service conditions by allowing attackers to disrupt legitimate update processes or inject malicious code that compromises system integrity. The impact extends beyond simple credential theft to potentially enabling broader system compromise through the update mechanism.
The vulnerability aligns with CWE-295, which specifically addresses "Improper Certificate Validation," and demonstrates how weak certificate validation in data processing modules can create persistent security weaknesses. From an attack framework perspective, this vulnerability maps to ATT&CK technique T1552.001 for credential access and potentially T1499 for denial of service. The attack surface is limited to local privileged users, but the potential for privilege escalation and credential compromise makes this a critical concern for enterprise environments where system update processes are regularly executed with elevated permissions.
Mitigation strategies should prioritize immediate patching of Dell System Update to versions that address the certificate validation weakness. Organizations should implement additional monitoring for unauthorized update activities and credential access patterns. Network segmentation and privilege minimization practices should be enforced to limit the potential impact of exploitation. System administrators should conduct thorough vulnerability assessments to identify systems running affected versions and implement compensating controls such as enhanced logging and alerting for update process activities. Regular security assessments should verify that certificate validation mechanisms function properly and that no unauthorized modifications have occurred to the update infrastructure.