CVE-2019-14657
8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD
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.
Affected (3)
Products: Yeahlink: Vp59 Firmware, T49g Firmware, T58v Firmware
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Up to 2019-08-04 |
| Running on/with | Platform Versions |
|---|---|
Yeahlink Vp59 | All versions |
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| Up to 2019-08-04 |
| Running on/with | Platform Versions |
|---|---|
Yeahlink T49g | All versions |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| Up to 2019-08-04 |
| Running on/with | Platform Versions |
|---|---|
Yeahlink T58v | All versions |
Related CWEs
CWE-22
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CWE-434
Unrestricted Upload of File with Dangerous Type
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.
References (4)
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Timeline
No history available yet.