Vulnerability identifier: #VU26525

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-9375

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Archer C50 V3
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: TP-Link

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can use a specially crafted HTTP Header containing an unexpected Referer field and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Archer C50 V3: 171227

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External links
http://packetstormsecurity.com/files/156928/TP-Link-Archer-C50-V3-Denial-of-Service.html
http://thewhiteh4t.github.io/2020/02/27/CVE-2020-9375-TP-Link-Archer-C50-v3-Denial-of-Service.html
http://www.tp-link.com/in/support/download/archer-c50/v3/#Firmware

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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. However, proof of concept for this vulnerability is available.