CVE Vulnerability

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.

9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://sway.office.com/3pCb559LYVuT0eig Exploit Third Party Advisory
http://cerebusforensics.com/yealink/exploit.html Exploit Third Party Advisory
Configurations

Configuration 1
Information

Published : 2019-10-08 01:15

Updated : 2019-10-18 02:47

NVD link : CVE-2019-14657

Mitre link : CVE-2019-14657

Products Affected

Vp59 Firmware

Yeahlink

CWE
CWE-22

CWE-434