Path traversal in Yeastar NeoGate TG400
| Risk | Medium |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-27328 |
| CWE-ID | CWE-22 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
NeoGate TG400 Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Yeastar |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Path traversal
EUVDB-ID: #VU50865
Risk: Medium
CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:U/RC:C]
CVE-ID: CVE-2021-27328
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe 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 "1404" parameter. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsNeoGate TG400: 91.3.0.3
External linkshttp://yeastar.com
http://github.com/SQSamir/CVE-2021-27328
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
