#VU47079 Path traversal in Ozeki NG SMS Gateway - CVE-2020-14021

Vulnerability identifier: #VU47079

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-14021

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ozeki NG SMS Gateway
Web applications / Remote management & hosting panels

Vendor: Ozeki Ltd.

Description

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

The vulnerability exists due to input validation error when processing directory traversal sequences within the The ASP.net SMS module. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Ozeki NG SMS Gateway: 4.0.0 - 4.17.6

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External links
https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-14021-Arbitrary%20File%20Read-Ozeki%20SMS%20Gateway
https://www.ozeki.hu/index.php?ow_page_number=1017&downloadaction=email&download_product_id=1&os=windows&dpath=%2Fattachments%2F702%2Finstallwindows_1590575794_OzekiNG-SMS-Gateway_4.17.6.zip&dname=Ozeki+NG+SMS+Gateway+v4.17.6&dsize=+%2817.8+MB%29&platform=Windows
https://www.ozeki.hu/index.php?owpn=231

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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.