CVE-2019-9500 Information

Description

The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host or when used in combination with CVE-2019-9503 can be used remotely. In the worst case scenario by sending specially-crafted WiFi packets a remote unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically this vulnerability will result in denial-of-service conditions.

CVSS Vector

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

Reference

https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deff https://kb.cert.org/vuls/id/166939/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.3