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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2019-9503 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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://bugzilla.suse.com/show_bug.cgi?id=1132828 Issue Tracking  Third Party Advisory 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4176ec356c73a46c07c181c6d04039fafa34a9f Patch  Third Party Advisory 
https://kb.cert.org/vuls/id/166939/ Third Party Advisory  US Government Resource 
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 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST   CERT/CC  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9503
NVD Published Date:
01/16/2020
NVD Last Modified:
04/18/2022
Source:
CERT/CC