CVE Vulnerabilities

CVE-2015-1854

Improper Access Control

Published: Sep 19, 2017 | Modified: Feb 13, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
4.8 IMPORTANT
AV:A/AC:L/Au:N/C:N/I:P/A:P
RedHat/V3
Ubuntu
MEDIUM

389 Directory Server before 1.3.3.10 allows attackers to bypass intended access restrictions and modify directory entries via a crafted ldapmodrdn call.

Weakness

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Software

Name Vendor Start Version End Version
389_directory_server Fedoraproject * 1.3.3.9 (including)
Red Hat Enterprise Linux 7 RedHat 389-ds-base-0:1.3.3.1-16.el7_1 *
389-ds-base Ubuntu precise *
389-ds-base Ubuntu upstream *
389-ds-base Ubuntu utopic *
389-ds-base Ubuntu vivid *
389-ds-base Ubuntu wily *

Extended Description

Access control involves the use of several protection mechanisms such as:

When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses:

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