Vulnerability Details CVE-2023-31096
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). An attacker can exploit this to elevate privileges from a medium-integrity process to SYSTEM. This can also be used to bypass kernel-level protections such as AV or PPL, because exploit code runs with high-integrity privileges and can be used in coordinated BYOVD (bring your own vulnerable driver) ransomware campaigns.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.7%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2023-31096
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cpe:2.3:h:broadcom:lsi_pci-sv92ex:-
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cpe:2.3:o:broadcom:lsi_pci-sv92ex_firmware:-
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cpe:2.3:o:broadcom:lsi_pci-sv92ex_firmware:2.2.100.1