Multiple vulnerabilities in Broadcom wl WiFi driver

Published: 2020-02-03 | Updated: 2020-07-09

Risk	Medium
Patch available	NO
Number of vulnerabilities	2
CVE-ID	CVE-2019-9501 CVE-2019-9502
CWE-ID	CWE-787
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software	Broadcom wl driver Hardware solutions / Drivers
Vendor	Broadcom

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU29627

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-9501

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input in "wlc_wpa_sup_eapol". A remote attacker on the local network can send specially crafted WiFi packets, trigger out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Broadcom wl driver: All versions

CPE2.3

cpe:2.3:h:broadcom:broadcom_wl_driver:*:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds write

EUVDB-ID: #VU29628