Vulnerability identifier: #VU17381

Vulnerability risk: Medium

CVSSv3.1: 8.3 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6496

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Avastar 88W8897
Hardware solutions / Firmware
Avastar 88W8801
Hardware solutions / Firmware
Avastar 88W8797
Hardware solutions / Firmware
Avastar 88W8787
Hardware solutions / Firmware

Vendor: Marvell Technology

Description
The vulnerability allows an adjacent unauthenticated attacker to execute arbitrary code on the host system.

The weakness exists due to a block pool memory overflow during Wi-Fi network scans. An adjacent attacker within Wi-Fi radio range can overwrite certain block pool data structures to intercept network traffic or execute arbitrary code on a system with a vulnerable Marvell SoC.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Avastar 88W8897: All versions

Avastar 88W8801: All versions

Avastar 88W8797: All versions

Avastar 88W8787: All versions

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External links
http://kb.cert.org/vuls/id/730261/
http://ru.scribd.com/document/398350818/WiFi-CVE-2019-6496-Marvell-s-Statement

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.