CVE-2024-5474 in Dolby Vision Provisioning software
Summary
by MITRE • 10/11/2024
A potential information disclosure vulnerability was reported in Lenovo's packaging of Dolby Vision Provisioning software prior to version 2.0.0.2 that could allow a local attacker to read files on the system with elevated privileges during installation of the package. Previously installed versions are not affected by this issue.
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Analysis
by VulDB Data Team • 11/15/2024
This vulnerability represents a critical information disclosure flaw in Lenovo's implementation of Dolby Vision Provisioning software where local attackers with limited system access can potentially read sensitive files during the installation process. The issue specifically affects versions prior to 2.0.0.2, indicating that Lenovo has addressed this concern through software updates. The vulnerability arises from improper privilege handling during package installation, creating an attack surface where unprivileged users can escalate their access to read system files that should remain protected. This type of flaw falls under the category of privilege escalation vulnerabilities and aligns with CWE-276, which addresses incorrect permissions for critical resources.
The technical exploitation of this vulnerability occurs during the software installation phase when the Dolby Vision Provisioning package executes with elevated privileges but fails to properly enforce access controls on file operations. Attackers can leverage this weakness to access files that typically require administrative permissions, potentially exposing sensitive system information, configuration data, or other protected resources. The operational impact extends beyond simple information disclosure as it enables attackers to gather intelligence about the target system, potentially facilitating further attacks or system compromise. This vulnerability directly relates to ATT&CK technique T1068 which covers local privilege escalation and T1566 which involves credential access through social engineering or system exploitation.
The security implications of this flaw are particularly concerning given that it affects a widely distributed software package through Lenovo's standard distribution channels. The fact that previously installed versions are not affected suggests that Lenovo has implemented proper access control mechanisms in their updated releases. Organizations should prioritize updating to version 2.0.0.2 or later to mitigate this risk. The vulnerability demonstrates the importance of proper privilege management in software installation processes and highlights the need for robust access control enforcement even during system modification operations. System administrators should conduct inventory checks to identify affected systems and ensure that all Lenovo devices running older versions of the Dolby Vision Provisioning software are updated immediately.
This type of vulnerability represents a common pattern in software distribution where installation processes fail to properly isolate privilege levels, creating opportunities for attackers to exploit the temporary elevated access. The remediation approach requires careful consideration of the software update process itself, ensuring that updates properly implement access control checks and privilege boundaries. Organizations should also consider implementing additional monitoring for unusual file access patterns during software installation processes, as this could serve as an indicator of exploitation attempts. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date software, particularly in enterprise environments where multiple systems may be vulnerable to similar issues.