CVE-2019-9500

HIGH

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.

References

https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html

https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deff

https://kb.cert.org/vuls/id/166939/

Details

Source: MITRE

Published: 2020-01-16

Updated: 2020-01-29

Type: CWE-787

Risk Information

CVSS v2.0

Base Score: 7.9

Vector: AV:A/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 5.5

Severity: HIGH

CVSS v3.0

Base Score: 8.3

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

Impact Score: 6

Exploitability Score: 1.6

Severity: HIGH