CVE-2019-9503

The Broadcom brcmfmac WiFi driver prior to commit a4176ec356c73a46c07c181c6d04039fafa34a9f is vulnerable to a frame validation bypass. If the brcmfmac driver receives a firmware event frame from a remote source, the is_wlc_event_frame function will cause this frame to be discarded and unprocessed. If the driver receives the firmware event frame from the host, the appropriate handler is called. This frame validation can be bypassed if the bus used is USB (for instance by a wifi dongle). This can allow firmware event frames from a remote source to be processed. 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.

Link	Resource
https://kb.cert.org/vuls/id/166939/	Third Party Advisory US Government Resource
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4176ec356c73a46c07c181c6d04039fafa34a9f	Patch Third Party Advisory
https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1701842	Issue Tracking Third Party Advisory
https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9503.html	Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2019-9503	Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1132828	Issue Tracking Third Party Advisory

Configuration 1

cpe:2.3:a:broadcom:brcmfmac_driver:-:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*

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Published : 2020-01-16 09:15

Updated : 2022-04-18 06:09

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NVD link : CVE-2019-9503

Mitre link : CVE-2019-9503

No products.

CWE-20