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CVE-2019-14657

8.8 · HIGH

Yealink phones through 2019-08-04 have an issue with OpenVPN file upload.

Published Oct 8, 2019CWE-22EPSS 3.74%

Overview

CVE-2019-14657 is a high-severity vulnerability. It was published on October 8, 2019 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. Some level of privileges is required for exploitation.

Technical description

Yealink phones through 2019-08-04 have an issue with OpenVPN file upload. They execute tar as root to extract files, but do not validate the extraction directory. Creating a tar file with ../../../../ allows replacement of almost any file on a phone. This leads to password replacement and arbitrary code execution as root.

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

Refcerebusforensics.com/yealink/exploit.htmlRefsway.office.com/3pCb559LYVuT0eigRefcerebusforensics.com/yealink/exploit.htmlRefsway.office.com/3pCb559LYVuT0eig

How CyberStrike helps

Frequently asked questions

What is CVE-2019-14657?

CVE-2019-14657 is a high-severity vulnerability. It was published on October 8, 2019 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2019-14657?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2019-14657?

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-2019-14657?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-14657 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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