Vulnerability identifier: #VU50647

Vulnerability risk: Medium

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

CVE-ID: CVE-2021-22312

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Huawei IPS Module
Server applications / IDS/IPS systems, Firewalls and proxy servers
Huawei NGFW Module
Server applications / Other server solutions
Huawei Secospace USG6300
Server applications / Server solutions for antivurus protection
Huawei Secospace USG6500
Server applications / Server solutions for antivurus protection
Huawei Secospace USG6600
Server applications / Server solutions for antivurus protection
USG9500
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Huawei

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote authenticated attacker can force the application to leak memory and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Huawei IPS Module: V500R005C00SPC100 - V500R005C00SPC200

Huawei NGFW Module: V500R005C00SPC100 - V500R005C00SPC200

Huawei Secospace USG6300: V500R001C30SPC200 - V500R005C00SPC200

Huawei Secospace USG6500: V500R001C30SPC200 - V500R005C00SPC200

Huawei Secospace USG6600: V500R001C30SPC200 - V500R005C00SPC200

USG9500: V500R001C30SPC200 - V500R005C00SPC200

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External links
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210210-01-memoryleak-en

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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