Vulnerability identifier: #VU53423

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-22357

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Huawei S12700
Hardware solutions / Routers for home users
Huawei S5700
Hardware solutions / Routers for home users
Huawei S6700
Hardware solutions / Routers & switches, VoIP, GSM, etc
Huawei S7700
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Huawei

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker on the local network can send specific messages and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Huawei S12700: V200R013C00SPC500 - V200R019C00SPC500

Huawei S5700: V200R013C00SPC500 - V200R019C00SPC500

Huawei S6700: V200R013C00SPC500 - V200R019C00SPC500

Huawei S7700: V200R013C00SPC500 - V200R019C00SPC500

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External links
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210512-01-dos-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 local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.