#VU29043 Use of a broken or risky cryptographic algorithm in R6700

Vulnerability identifier: #VU29043

Vulnerability risk: Low

CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-327

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
R6700
Hardware solutions / Routers for home users

Vendor: NETGEAR

Description

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

The vulnerability exists due to the weak encryption of firmware update images within the "check_ra" functionality. An attacker on the local network can execute arbitrary code on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

R6700: All versions

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External links
https://www.zerodayinitiative.com/advisories/ZDI-20-707/

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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.