#VU57426 Input validation error


Published: 2021-10-19

Vulnerability identifier: #VU57426

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21744

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MF971R
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: ZTE

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to Pre-Auth Configuration File Control issue. A remote unauthenticated attacker can trick a victim to visit a specially crafted link and overwrite a configuration file entry.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MF971R: All versions


CPE

External links
http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1316


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.


Latest bulletins with this vulnerability