CVE Vulnerabilities

CVE-2018-14648

Uncontrolled Resource Consumption

Published: Sep 28, 2018 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
7.8 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

A flaw was found in 389 Directory Server. A specially crafted search query could lead to excessive CPU consumption in the do_search() function. An unauthenticated attacker could use this flaw to provoke a denial of service.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Name Vendor Start Version End Version
389_directory_server Fedoraproject * 1.4.0.17 (excluding)
Red Hat Enterprise Linux 7 RedHat 389-ds-base-0:1.3.8.4-15.el7 *
Red Hat Enterprise Linux 7.5 Extended Update Support RedHat 389-ds-base-0:1.3.7.5-29.el7_5 *
389-ds-base Ubuntu bionic *
389-ds-base Ubuntu cosmic *
389-ds-base Ubuntu esm-apps/bionic *
389-ds-base Ubuntu esm-apps/xenial *
389-ds-base Ubuntu trusty *
389-ds-base Ubuntu upstream *
389-ds-base Ubuntu xenial *

Potential Mitigations

  • Mitigation of resource exhaustion attacks requires that the target system either:

  • The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

  • The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

References