CVE-2023-31096 Explained : Impact and Mitigation
CVE-2023-31096 allows Local Privilege Escalation in Broadcom LSI Soft Modem Driver. Learn about impact, affected systems, and mitigation steps.
An issue was discovered in Broadcom) LSI PCI-SV92EX Soft Modem Kernel Driver through 2.2.100.1 (aka AGRSM64.sys). There is Local Privilege Escalation to SYSTEM via a Stack Overflow in RTLCopyMemory (IOCTL 0x1b2150). This can lead to privilege elevation from a medium-integrity process to SYSTEM and circumvention of kernel-level protections like AV or PPL. This vulnerability could be exploited in coordinated ransomware campaigns.
Understanding CVE-2023-31096
This section provides insights into the nature and impact of CVE-2023-31096.
What is CVE-2023-31096?
CVE-2023-31096 refers to a Local Privilege Escalation vulnerability in the Broadcom LSI PCI-SV92EX Soft Modem Kernel Driver, allowing an attacker to elevate privileges to SYSTEM via a Stack Overflow exploit in RTLCopyMemory.
The Impact of CVE-2023-31096
The impact of this vulnerability includes the potential for attackers to escalate privileges to SYSTEM and bypass kernel-level protections, enabling the execution of malicious code with high-integrity privileges.
Technical Details of CVE-2023-31096
Explore the technical aspects of CVE-2023-31096 to better understand the vulnerability.
Vulnerability Description
The vulnerability arises from a Stack Overflow in RTLCopyMemory within the Broadcom LSI PCI-SV92EX Soft Modem Kernel Driver, facilitating Local Privilege Escalation to SYSTEM.
Affected Systems and Versions
All versions of the Broadcom LSI PCI-SV92EX Soft Modem Kernel Driver through 2.2.100.1 (AGRSM64.sys) are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability to execute code with high-privileges, allowing them to elevate from medium-integrity processes to SYSTEM and bypass kernel-level security mechanisms.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2023-31096 and prevent potential exploitation.
Immediate Steps to Take
Immediate actions include applying relevant security patches, monitoring for any signs of exploitation, and restricting access privileges where possible.
Long-Term Security Practices
In the long term, organizations should implement rigorous security measures, conduct regular security assessments, and stay informed about security updates and patches.
Patching and Updates
Regularly update and patch software to mitigate vulnerabilities and prevent potential exploitation of known security issues.