CVE-2019-9503
Summary
| CVE | CVE-2019-9503 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2020-01-16 21:15:00 UTC |
| Updated | 2022-04-18 18:09:00 UTC |
| 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. |
Risk And Classification
Problem Types: CWE-20
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Broadcom | Brcmfmac Driver | - | All | All | All |
| Application | Broadcom | Brcmfmac Driver | - | All | All | All |
| Operating System | Redhat | Enterprise Linux | 6.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 7.0 | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| VU#166939 - Broadcom WiFi chipset drivers contain multiple vulnerabilities | MISC | kb.cert.org | Third Party Advisory, US Government Resource |
| Bug 1132828 – VUL-1: CVE-2019-9503: kernel-source: brcmfmac frame validation bypass | MISC | bugzilla.suse.com | |
| 1701842 – (CVE-2019-9503) CVE-2019-9503 kernel: brcmfmac frame validation bypass | MISC | bugzilla.redhat.com | |
| Reverse-engineering Broadcom wireless chipsets | MISC | blog.quarkslab.com | Third Party Advisory |
| CVE-2019-9503 | MISC | security-tracker.debian.org | |
| kernel/git/torvalds/linux.git - Linux kernel source tree | MISC | git.kernel.org | Patch, Third Party Advisory |
| CVE-2019-9503 in Ubuntu | MISC | people.canonical.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.