Privilege escalation in Cerio DT-300N routers



Published: 2019-06-18
Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2018-18852
CWE-ID CWE-78
Exploitation vector Local network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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DT-300N
Hardware solutions / Routers for home users

Vendor Cerio

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) OS Command Injection

EUVDB-ID: #VU18825

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2018-18852

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in Save.cgi script within the "ping" feature in web interface. A remote authenticated attacker can inject and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in execution of system commands with higher privileges.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

DT-300N: 1.1.6 - 1.1.12

External links

http://www.fortiguard.com/zeroday/FG-VD-18-149


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).

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.



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