#VU63188 Path traversal in ZXHN F477 and ZXHN F677 - CVE-2022-23135

Vulnerability identifier: #VU63188

Vulnerability risk: Medium

CVSSv4.0: 4.5 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-23135

CWE-ID: CWE-22

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
ZXHN F477
Hardware solutions / Routers for home users
ZXHN F677
Hardware solutions / Routers for home users

Vendor: ZTE

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote user can send a specially crafted HTTP request and modify the FTP access path, obtain sensitive information, and perform a denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ZXHN F477: 9.0.0P1N28

ZXHN F677: 9.0.0P1N28

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External links
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1023444

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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