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CVE-2021-39173

8.8 · HIGH

Cachet is an open source status page system.

Published Aug 27, 2021CWE-704EPSS 2.36%

Overview

CVE-2021-39173 is a high-severity vulnerability. It was published on August 27, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Cachet is an open source status page system. Prior to version 2.5.1 authenticated users, regardless of their privileges (User or Admin), can trick Cachet and install the instance again, leading to arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving the middleware `ReadyForUse`, which now performs a stricter validation of the instance name. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.

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

Refblog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/GitHubgithub.com/fiveai/Cachet/releases/tag/v2.5.1GitHubgithub.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83Refblog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/GitHubgithub.com/fiveai/Cachet/releases/tag/v2.5.1GitHubgithub.com/fiveai/Cachet/security/advisories/GHSA-r67m-m8c7-jp83

How CyberStrike helps

Frequently asked questions

What is CVE-2021-39173?

CVE-2021-39173 is a high-severity vulnerability. It was published on August 27, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-39173?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-39173?

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-2021-39173?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-39173 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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