CVE Vulnerabilities

CVE-2020-13549

Incorrect Default Permissions

Published: Feb 19, 2021 | Modified: Oct 06, 2022
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

An exploitable local privilege elevation vulnerability exists in the file system permissions of Sytech XL Reporter v14.0.1 install directory. Depending on the vector chosen, an attacker can overwrite service executables and execute arbitrary code with privileges of user set to run the service or replace other files within the installation folder, which would allow for local privilege escalation.

Weakness

During installation, installed file permissions are set to allow anyone to modify those files.

Affected Software

Name Vendor Start Version End Version
Xlreporter Sytech 14.0.1 (including) 14.0.1 (including)

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References