Vulnerability identifier: #VU50286

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22309

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
USG9500
Hardware solutions / Routers & switches, VoIP, GSM, etc
Huawei USG9520
Hardware solutions / Routers & switches, VoIP, GSM, etc
Huawei USG9560
Hardware solutions / Routers & switches, VoIP, GSM, etc
USG9580
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Huawei

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a module uses less random input in a secure mechanism. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

USG9500: V500R001C30SPC200 - V500R005C00SPC200

Huawei USG9520: V500R005C00

Huawei USG9560: V500R005C00

USG9580: V500R005C00

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External links
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210202-01-fw-en

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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.