CVE-2019-14657

Public Exploit

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.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.92% Top 20%
Third-Party Advisory cerebusforensics.com Third-Party Advisory office.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://cerebusforensics.com/yealink/exploit.html third party advisory exploit
https://sway.office.com/3pCb559LYVuT0eig third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2019-14657?
CVE-2019-14657 has been scored as a high severity vulnerability.
How to fix CVE-2019-14657?
To fix CVE-2019-14657, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-14657 being actively exploited in the wild?
It is possible that CVE-2019-14657 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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