Vulnerability identifier: #VU50274

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21285

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Docker
Server applications / Virtualization software

Vendor:

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trick a victim to pull a specially crafted Docker image, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://docs.docker.com/engine/release-notes/#20103
http://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30
http://github.com/moby/moby/releases/tag/v19.03.15
http://github.com/moby/moby/releases/tag/v20.10.3
http://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.