Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Broadcom | Brcmfmac Driver | - |
| Linux | Linux Kernel | >= 4.5, < 4.9.181 |
Related Weaknesses (CWE)
References
- https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.htmlExploitThird Party Advisory
- https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deffPatchThird Party Advisory
- https://kb.cert.org/vuls/id/166939/Third Party AdvisoryUS Government Resource
- https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.htmlExploitThird Party Advisory
- https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deffPatchThird Party Advisory
- https://kb.cert.org/vuls/id/166939/Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2019-9500?
CVE-2019-9500 is a vulnerability with a CVSS score of 7.9 (HIGH). 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 malici...
How severe is CVE-2019-9500?
CVE-2019-9500 has been rated HIGH with a CVSS base score of 7.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-9500?
Check the references section above for vendor advisories and patch information. Affected products include: Broadcom Brcmfmac Driver, Linux Linux Kernel.