Vulnerability identifier: #VU59870

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-2021-40042

CWE-ID: CWE-763

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Huawei CloudEngine 12800
Hardware solutions / Firmware
Huawei CloudEngine 5800
Hardware solutions / Routers & switches, VoIP, GSM, etc
Huawei CloudEngine 6800
Hardware solutions / Routers & switches, VoIP, GSM, etc
Huawei CloudEngine 7800
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 a release of invalid pointer in Huawei OptiX OSN 9800 U32 product. A remote authenticated attacker can send specially crafted messages and cause a denial of service condition in th target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Huawei CloudEngine 12800: V200R019C10SPC800 - V200R019C10SPC900

Huawei CloudEngine 5800: V200R019C10SPC800 - V200R020C00SPC600

Huawei CloudEngine 6800: V200R019C10SPC800 - V300R020C00SPC200

Huawei CloudEngine 7800: V200R019C10SPC800

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External links
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20220112-01-invalid-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.