CVE Vulnerabilities

CVE-2020-1722

Uncontrolled Resource Consumption

Published: Apr 27, 2020 | Modified: Nov 21, 2024
CVSS 3.x
5.3
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
5.4 MEDIUM
AV:N/AC:H/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
5.3 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM

A flaw was found in all ipa versions 4.x.x through 4.8.0. When sending a very long password (>= 1,000,000 characters) to the server, the password hashing process could exhaust memory and CPU leading to a denial of service and the website becoming unresponsive. The highest threat from this vulnerability is to system availability.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Freeipa Freeipa 4.0.0 (including) 4.8.0 (including)
Red Hat Enterprise Linux 7 RedHat ipa-0:4.6.8-5.el7 *
Red Hat Enterprise Linux 8 RedHat idm:client-8030020200923172426.05ac3f11 *
Red Hat Enterprise Linux 8 RedHat idm:DL1-8030020200923172343.9c827e52 *
Freeipa Ubuntu bionic *
Freeipa Ubuntu eoan *
Freeipa Ubuntu focal *
Freeipa Ubuntu groovy *
Freeipa Ubuntu hirsute *
Freeipa Ubuntu impish *
Freeipa Ubuntu kinetic *
Freeipa Ubuntu lunar *
Freeipa Ubuntu mantic *
Freeipa Ubuntu oracular *
Freeipa Ubuntu trusty *
Freeipa Ubuntu trusty/esm *
Freeipa 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