#VU8209 Security restrictions bypass in DIR-850L - CVE-2017-14423

Vulnerability identifier: #VU8209

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-14423

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
DIR-850L
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: D-Link

Description
The vulnerability allows a remote attacker to bypass security restrictions.

The weakness exists due to insufficient sanitization of user-supplied data. A remote attacker can send a specially crafted HTTP request to bypass security restrictions, alter DNS settings and perform further routing and bruteforce attacks.

Mitigation

Cybersecurity Help is currently unaware of any official patch addressing the vulnerability.

Vulnerable software versions

DIR-850L: Rev.B1 2.06 - 2.07.B05

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External links
https://pierrekim.github.io/advisories/2017-dlink-0x00-dlink-850l-cloud.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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