CVE-2023-31096

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Summary

CVECVE-2023-31096
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-10-10 19:15:00 UTC
Updated2023-10-18 20:27:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Broadcom Lsi Pci-sv92ex - All All All
Operating System Broadcom Lsi Pci-sv92ex Firmware All All All All

References

ReferenceSourceLinkTags
Broadcom Inc. | Connecting Everything MISC www.broadcom.com
kernel driver bughunting: exploiting a stack-based buffer overflow | home MISC cschwarz1.github.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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