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CVE-2020-15229

8.2 · HIGH

Singularity (an open source container platform) from version 3.1.1 through 3.6.3 has a vulnerability.

Published Oct 14, 2020CWE-22EPSS 2.05%

Overview

CVE-2020-15229 is a high-severity vulnerability. It was published on October 14, 2020 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Singularity (an open source container platform) from version 3.1.1 through 3.6.3 has a vulnerability. Due to insecure handling of path traversal and the lack of path sanitization within `unsquashfs`, it is possible to overwrite/create any files on the host filesystem during the extraction with a crafted squashfs filesystem. The extraction occurs automatically for unprivileged (either installation or with `allow setuid = no`) run of Singularity when a user attempt to run an image which is a local SIF image or a single file containing a squashfs filesystem and is coming from remote sources `library://` or `shub://`. Image build is also impacted in a more serious way as it can be used by a root user, allowing an attacker to overwrite/create files leading to a system compromise, so far bootstrap methods `library`, `shub` and `localimage` are triggering the squashfs extraction. This issue is addressed in Singularity 3.6.4. All users are advised to upgrade to 3.6.4 especially if they use Sin

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

Reflists.opensuse.org/opensuse-security-announce/2020-10/msg00070.htmlReflists.opensuse.org/opensuse-security-announce/2020-10/msg00071.htmlReflists.opensuse.org/opensuse-security-announce/2020-11/msg00009.htmlGitHubgithub.com/hpcng/singularity/blob/v3.6.4/CHANGELOG.md#security-related-fixesGitHubgithub.com/hpcng/singularity/commit/eba3dea260b117198fdb6faf41f2482ab2f8d53eGitHubgithub.com/hpcng/singularity/pull/5611GitHubgithub.com/hpcng/singularity/security/advisories/GHSA-7gcp-w6ww-2xv9Reflists.opensuse.org/opensuse-security-announce/2020-10/msg00070.htmlReflists.opensuse.org/opensuse-security-announce/2020-10/msg00071.htmlReflists.opensuse.org/opensuse-security-announce/2020-11/msg00009.html

How CyberStrike helps

Frequently asked questions

What is CVE-2020-15229?

CVE-2020-15229 is a high-severity vulnerability. It was published on October 14, 2020 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2020-15229?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-15229?

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-2020-15229?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-15229 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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