Security Advisory

CVE-2019-14657

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2019-10-08 12:02:34

Last updated 2024-08-05 00:19:41

Assigner mitre

State PUBLISHED

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.

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