CVE Vulnerabilities

CVE-2018-20699

Uncontrolled Resource Consumption

Published: Jan 12, 2019 | Modified: Nov 21, 2024
CVSS 3.x
4.9
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
RedHat/V3
4.5 LOW
CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Ubuntu
NEGLIGIBLE

Docker Engine before 18.09 allows attackers to cause a denial of service (dockerd memory consumption) via a large integer in a –cpuset-mems or –cpuset-cpus value, related to daemon/daemon_unix.go, pkg/parsers/parsers.go, and pkg/sysinfo/sysinfo.go.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Engine Docker * 18.09 (excluding)
Red Hat Enterprise Linux 7 Extras RedHat docker-2:1.13.1-94.gitb2f74b2.el7 *
Docker.io Ubuntu bionic *
Docker.io Ubuntu cosmic *
Docker.io Ubuntu devel *
Docker.io Ubuntu disco *
Docker.io Ubuntu esm-apps/bionic *
Docker.io Ubuntu esm-infra/xenial *
Docker.io Ubuntu trusty *
Docker.io 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