Path traversal in several Huawei Smartphones

1) Path traversal

EUVDB-ID: #VU23412

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5251

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a local attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A local attacker can trick the victim to install, backup up and restore a malicious application and read arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Huawei Honor V10: before 9.1.0.333

P30: before 9.1.0.226

Huawei Enjoy 7S: before 9.1.0.226

Huawei Mate 20: before 9.1.0.139

Huawei Honor 9 Lite: before 9.1.0.143

Huawei Honor 9i: before 9.1.0.120

Huawei M6: before 9.1.1.150

P30 Pro: before 9.1.0.226

Huawei Honor 20s: before 9.1.1.132

External links

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191204-03-smartphone-en

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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