CVE Vulnerabilities

CVE-2020-5896

Incorrect Default Permissions

Published: May 12, 2020 | Modified: May 14, 2020
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
4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

On versions 7.1.5-7.1.9, the BIG-IP Edge Clients Windows Installer Services temporary folder has weak file and folder permissions.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Big-ip_access_policy_manager F5 11.6.1 (including) 11.6.5.1 (including)
Big-ip_access_policy_manager F5 12.1.0 (including) 12.1.5.1 (including)
Big-ip_access_policy_manager F5 13.1.0 (including) 13.1.3.3 (including)
Big-ip_access_policy_manager F5 14.1.0 (including) 14.1.2.5 (including)
Big-ip_access_policy_manager F5 15.0.0 (including) 15.1.0.3 (including)
Big-ip_access_policy_manager_client F5 7.1.5 (including) 7.1.9 (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