CVE Vulnerabilities

CVE-2020-13867

Incorrect Default Permissions

Published: Jun 05, 2020 | Modified: Nov 07, 2023
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
5.5 MODERATE
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Ubuntu
MEDIUM

Open-iSCSI targetcli-fb through 2.1.52 has weak permissions for /etc/target (and for the backup directory and backup files).

Weakness

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

Affected Software

Name Vendor Start Version End Version
Targetcli-fb Targetcli-fb_project * 2.1.52 (including)
Red Hat Enterprise Linux 7 RedHat targetcli-0:2.1.53-1.el7_9 *
Red Hat Enterprise Linux 8 RedHat targetcli-0:2.1.53-1.el8 *
Targetcli-fb Ubuntu eoan *
Targetcli-fb Ubuntu esm-apps/focal *
Targetcli-fb Ubuntu focal *
Targetcli-fb Ubuntu trusty *

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