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CVE-2023-31096

UNKNOWN
Published 2023-10-10T00:00:00
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

broadcom

lsi_pci-sv92ex_firmware

Affected Versions:

2.2.100.1

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-6hxc-fm22-74v5

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-31096
WEB https://cschwarz1.github.io/posts/0x04
WEB https://www.broadcom.com

Advisory provided by GitHub Security Advisory Database. Published: October 10, 2023, Modified: April 4, 2024

References

https://www.broadcom.com
https://cschwarz1.github.io/posts/0x04/
Published: 2023-10-10T00:00:00
Last Modified: 2024-09-19T14:04:25.042Z
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