An issue exists in Broadcom) LSI PCI-SV92EX Soft Modem Kernel Driver up to and including 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
broadcom lsi_pci-sv92ex_firmware |
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