#VU56978 Improper Authentication in XR1000 - CVE-2021-34870

Vulnerability identifier: #VU56978

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-34870

CWE-ID: CWE-287

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
XR1000
Hardware solutions / Routers for home users

Vendor: NETGEAR

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within the SOAP messages. A remote attacker on the local network can bypass authentication process and disclose stored credentials.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

XR1000: before 1.0.0.58

---

External links
https://www.zerodayinitiative.com/advisories/ZDI-21-1058/
https://kb.netgear.com/000063967/Security-Advisory-for-a-Security-Misconfiguration-Vulnerability-on-the-XR1000-PSV-2021-0101

---

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.