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CVE-2023-31096 An issue was discovered in Broadcom) LSI PCI-SV92EX Soft Modem Kernel Driver through 2.2.100.1 (aka AGRSM64.sys)
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| n/a | Versions not published | |
| lsi_pci-sv92ex_firmware | 2.2.100.1 | No fix stated |
References
- www.broadcom.com www.broadcom.com
- cschwarz1.github.io cschwarz1.github.io
Timeline
- Published
- Last modified
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