CVE-2019-9501

moderate-risk
Published 2020-02-03

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.

Do I need to act?

~
2.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.9/10 High
ADJACENT_NETWORK / HIGH complexity

Affected Products (2)

Bcm4339 Firmware

Affected Vendors

Broadcom Synology

References (4)

Exploit https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html
Third Party Advisory https://kb.cert.org/vuls/id/166939/
Exploit https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html
Third Party Advisory https://kb.cert.org/vuls/id/166939/
33
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 5/34 · Minimal
Exposure 7/34 · Low