9

CVE-2019-14657

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Yeahlink ≫ Vp59 Firmware Version <= 2019-08-04
   Yeahlink ≫ Vp59 Version-
Yeahlink ≫ T49g Firmware Version <= 2019-08-04
   Yeahlink ≫ T49g Version-
Yeahlink ≫ T58v Firmware Version <= 2019-08-04
   Yeahlink ≫ T58v Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.92% 0.817
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 9 8 10
AV:N/AC:L/Au:S/C:C/I:C/A:C
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.

https://sway.office.com/3pCb559LYVuT0eig
Third Party Advisory
Exploit