#VU59580 Buffer overflow in NETGEAR products - CVE-2021-45608

Vulnerability identifier: #VU59580

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-45608

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
D7800
Hardware solutions / Routers for home users
R6400v2
Hardware solutions / Routers for home users
R6700v3
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: NETGEAR

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in "oftwareBus_dispatchNormalEPMsgOut" in the KCodes NetUSB kernel module. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

D7800: before 1.0.1.68

R6400v2: before 1.0.4.122

R6700v3: before 1.0.4.122

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External links
https://kb.netgear.com/000064437/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Multiple-Products-PSV-2021-0278
https://www.sentinelone.com/labs/cve-2021-45608-netusb-rce-flaw-in-millions-of-end-user-routers/

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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 Internet.

Is there known malware, which exploits this vulnerability?

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