#VU31825 Improper Authentication in ZTE products - CVE-2020-6871

Vulnerability identifier: #VU31825

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-2020-6871

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
R5300G4
Hardware solutions / Other hardware appliances
R8500G4
Hardware solutions / Other hardware appliances
R5500G4
Hardware solutions / Other hardware appliances

Vendor: ZTE

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 server management software module. A remote attacker can bypass authentication process and execute some commands for high-level users.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

R5300G4: V03.04.0020 - V03.08.0100

R8500G4: V03.05.0020 - V03.07.0103

R5500G4: V03.06.0100 - V03.08.0100

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External links
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1013203

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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.