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CVE-2021-41089

2.8 · LOW

Moby is an open-source project created by Docker to enable software containerization.

Published Oct 4, 2021CWE-281EPSS 0.29%

Overview

CVE-2021-41089 is a low-severity vulnerability. It was published on October 4, 2021 and has a CVSS 3.1 base score of 2.8 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.8, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process. This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcert-portal.siemens.com/productcert/pdf/ssa-222547.pdfGitHubgithub.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129aGitHubgithub.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/Refcert-portal.siemens.com/productcert/pdf/ssa-222547.pdfGitHubgithub.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129aGitHubgithub.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-41089?

CVE-2021-41089 is a low-severity vulnerability. It was published on October 4, 2021 and has a CVSS 3.1 base score of 2.8 (LOW).

How severe is CVE-2021-41089?

This vulnerability has a CVSS 3.1 base score of 2.8, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-41089?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-41089?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-41089 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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