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CVE-2021-41151

6.8 · MEDIUM

Backstage is an open platform for building developer portals.

Published Oct 18, 2021CWE-22EPSS 1.31%

Overview

CVE-2021-41151 is a medium-severity vulnerability. It was published on October 18, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Backstage is an open platform for building developer portals. In affected versions A malicious actor could read sensitive files from the environment where Scaffolder Tasks are run. The attack is executed by crafting a custom Scaffolder template with a `github:publish:pull-request` action and a particular source path. When the template is executed the sensitive files would be included in the published pull request. This vulnerability is mitigated by the fact that an attacker would need access to create and register templates in the Backstage catalog, and that the attack is very visible given that the exfiltration happens via a pull request. The vulnerability is patched in the `0.15.9` release of `@backstage/plugin-scaffolder-backend`.

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

GitHubgithub.com/backstage/backstage/commit/6968962c920508eae19a4c1c200fa2c8980a4006GitHubgithub.com/backstage/backstage/security/advisories/GHSA-pvv8-8fx9-h673GitHubgithub.com/backstage/backstage/commit/6968962c920508eae19a4c1c200fa2c8980a4006GitHubgithub.com/backstage/backstage/security/advisories/GHSA-pvv8-8fx9-h673

How CyberStrike helps

Frequently asked questions

What is CVE-2021-41151?

CVE-2021-41151 is a medium-severity vulnerability. It was published on October 18, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2021-41151?

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-41151?

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-2021-41151?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-41151 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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