CVEvulnerability
CVE-2023-31096
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-10-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-787
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 configurations
• broadcom lsi pci-sv92ex firmware (<= 2.2.100.1)
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- https://cschwarz1.github.io/posts/0x04/ Exploit, Third Party Advisory
- https://www.broadcom.com Not Applicable
- https://cschwarz1.github.io/posts/0x04/ Exploit, Third Party Advisory
- https://www.broadcom.com Not Applicable