CVEvulnerability

CVE-2019-14657

8.8 HIGH Published 2019-10-08 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-10-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
9.0 HIGH — AV:N/AC:L/Au:S/C:C/I:C/A:C
Weaknesses
CWE-22, CWE-434

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 configurations

• yeahlink vp59 firmware (<= 2019-08-04) • yeahlink t49g firmware (<= 2019-08-04) • yeahlink t58v firmware (<= 2019-08-04)

Related

Weakness · CWE (2)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
  • CWE-434 Unrestricted Upload of File with Dangerous Type weakness

References