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CVE-2019-17147

8.8 · HIGH

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers.

Published Jan 7, 2020CWE-120EPSS 13.65%

Overview

CVE-2019-17147 is a high-severity vulnerability. It was published on January 7, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of TP-LINK TL-WR841N routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 80 by default. When parsing the Host request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length static buffer. An attacker can leverage this vulnerability to execute code in the context of the admin user. Was ZDI-CAN-8457.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.tp-link.com/us/support/download/tl-wr841n/#FirmwareRefwww.zerodayinitiative.com/advisories/ZDI-19-992/Refwww.tp-link.com/us/support/download/tl-wr841n/#FirmwareRefwww.zerodayinitiative.com/advisories/ZDI-19-992/

How CyberStrike helps

Frequently asked questions

What is CVE-2019-17147?

CVE-2019-17147 is a high-severity vulnerability. It was published on January 7, 2020 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2019-17147?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-17147?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-17147?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-17147 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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