Vulnerability Details CVE-2019-14657
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.019
EPSS Ranking 82.5%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 9.0
References
Products affected by CVE-2019-14657
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cpe:2.3:h:yeahlink:t49g:-
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cpe:2.3:h:yeahlink:t58v:-
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cpe:2.3:h:yeahlink:vp59:-
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cpe:2.3:o:yeahlink:t49g_firmware:*
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cpe:2.3:o:yeahlink:t58v_firmware:*
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cpe:2.3:o:yeahlink:vp59_firmware:*