CVSS: 8.3EPSS: 0%CPEs: 5EXPL: 1CVE-2019-9500 – Broadcom brcmfmac driver is vulnerable to a heap buffer overflow
https://notcve.org/view.php?id=CVE-2019-9500
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. • https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html https://git.kernel.org/linus/1b5e2423164b3670e8bc9174e4762d297990deff https://kb.cert.org/vuls/id/166939 https://access.redhat.com/security/cve/CVE-2019-9500 https://bugzilla.redhat.com/show_bug.cgi?id=1701224 • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 8.3EPSS: 0%CPEs: 3EXPL: 0CVE-2019-9503 – Broadcom brcmfmac driver is vulnerable to a frame validation bypass
https://notcve.org/view.php?id=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. • https://blog.quarkslab.com/reverse-engineering-broadcom-wireless-chipsets.html https://bugzilla.redhat.com/show_bug.cgi?id=1701842 https://bugzilla.suse.com/show_bug.cgi?id=1132828 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a4176ec356c73a46c07c181c6d04039fafa34a9f https://kb.cert.org/vuls/id/166939 https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-9503.html https://security-tracker.debian.org/tracker/CVE-2019-9503 https://access.redhat.com&# • CWE-20: Improper Input Validation •