CVE-2019-9501

The Broadcom wl WiFi driver is vulnerable to a heap buffer overflow. By supplying a vendor information element with a data length larger than 32 bytes, a heap buffer overflow is triggered in wlc_wpa_sup_eapol. 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.

Score

CVSS 3.1 8.8 High

Status

Modified - cret@cert.org

Published

2020-02-03

Last modified

2024-08-04

Weaknesses

CWE-122, CWE-787

Affected products

• Bcm4339 Firmware (Broadcom)
• Wifi Drivers (Broadcom)
• Router Manager (Synology)

References

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