CVE Vulnerabilities

CVE-2019-3893

Incorrect Permission Assignment for Critical Resource

Published: Apr 09, 2019 | Modified: Nov 30, 2022
CVSS 3.x
4.9
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu

In Foreman it was discovered that the delete compute resource operation, when executed from the Foreman API, leads to the disclosure of the plaintext password or token for the affected compute resource. A malicious user with the delete_compute_resource permission can use this flaw to take control over compute resources managed by foreman. Versions before 1.20.3, 1.21.1, 1.22.0 are vulnerable.

Weakness

The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

Affected Software

Name Vendor Start Version End Version
Foreman Theforeman 1.20.0 (including) 1.20.3 (excluding)
Foreman Theforeman 1.21.0 (including) 1.21.1 (excluding)

Potential Mitigations

  • Run the code in a “jail” or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
  • OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
  • This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
  • Be careful to avoid CWE-243 and other weaknesses related to jails.

References