Vulnerability identifier: #VU26576

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-9067

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SmartAX MA5600T
Hardware solutions / Routers & switches, VoIP, GSM, etc
SmartAX MA5800
Hardware solutions / Routers & switches, VoIP, GSM, etc
SmartAX EA5800
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Huawei

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can trigger memory corruption and execute arbitrary code on the target system as an optical line terminal (OLT).

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

SmartAX MA5600T: V800R013C10 - V800R018C10

SmartAX MA5800: V100R017C00 - V100R019C10

SmartAX EA5800: V100R018C00 - V100R019C10

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External links
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200401-01-overflow-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.