Denial of service in Huawei Y9 2019 and Honor View 20

1) Infinite loop

EUVDB-ID: #VU23617

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5260

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to insufficient input validation of specific value when parsing the messages. A remote attacker on the local network can send a specially crafted TD-SCDMA messages from a rogue base station to the affected devices, consume all available system resources and cause denial of service conditions.

Note: This vulnerability can be expoited when the affected device is working in TD-SCDMA mode.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Honor V20: 9.0.1.169 - 9.0.1.170

Huawei Y9 2019: 8.2.0.160 - 8.2.0.163

External links

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190911-01-mobile-en

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.