CVE-2019-6496
First published: Sat Jan 19 2019(Updated: )
The ThreadX-based firmware on Marvell Avastar Wi-Fi devices, models 88W8787, 88W8797, 88W8801, 88W8897, and 88W8997, allows remote attackers to execute arbitrary code or cause a denial of service (block pool overflow) via malformed Wi-Fi packets during identification of available Wi-Fi networks. Exploitation of the Wi-Fi device can lead to exploitation of the host application processor in some cases, but this depends on several factors including host OS hardening and the availability of DMA.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Marvell 88w8787 Firmware | ||
| Marvell 88w8787 | ||
| Marvell 88w8797 Firmware | ||
| Marvell 88w8797 | ||
| Marvell 88w8801 Firmware | ||
| Marvell 88w8801 | ||
| Marvell 88w8897 Firmware | ||
| Marvell 88w8897 | ||
| Marvell 88w8997 Firmware | ||
| Marvell 88w8997 |
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Reference Links
- http://www.securityfocus.com/bid/106865
- https://2018.zeronights.ru/wp-content/uploads/materials/19-Researching-Marvell-Avastar-Wi-Fi.pdf
- https://embedi.org/blog/remotely-compromise-devices-by-using-bugs-in-marvell-avastar-wi-fi-from-zero-knowledge-to-zero-click-rce/
- https://www.kb.cert.org/vuls/id/730261/
- https://www.scribd.com/document/398350818/WiFi-CVE-2019-6496-Marvell-s-Statement
- https://www.synology.com/security/advisory/Synology_SA_19_07
- https://www.zdnet.com/article/wifi-firmware-bug-affects-laptops-smartphones-routers-gaming-devices/
Frequently Asked Questions
What is CVE-2019-6496?
CVE-2019-6496 is a vulnerability in the ThreadX-based firmware on Marvell Avastar Wi-Fi devices, allowing remote code execution or denial of service.
Which Marvell Avastar Wi-Fi devices are affected by CVE-2019-6496?
Models 88W8787, 88W8797, 88W8801, 88W8897, and 88W8997 are affected by CVE-2019-6496.
What is the severity of CVE-2019-6496?
The severity of CVE-2019-6496 is rated as high, with a CVSS score of 8.8.
How can CVE-2019-6496 be exploited?
CVE-2019-6496 can be exploited by sending malformed Wi-Fi packets during the identification of available Wi-Fi networks.
Are there any references available for CVE-2019-6496?
Yes, you can refer to the following sources for more information on CVE-2019-6496: http://www.securityfocus.com/bid/106865, https://2018.zeronights.ru/wp-content/uploads/materials/19-Researching-Marvell-Avastar-Wi-Fi.pdf, https://embedi.org/blog/remotely-compromise-devices-by-using-bugs-in-marvell-avastar-wi-fi-from-zero-knowledge-to-zero-click-rce/
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- canonical/marvell 88w8897 firmware
- canonical/marvell 88w8897
- canonical/marvell 88w8997 firmware
- canonical/marvell 88w8997