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CVE-2021-21327

6.8 · MEDIUM

GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing.

Published Mar 8, 2021CWE-862EPSS 2.25%

Overview

CVE-2021-21327 is a medium-severity vulnerability. It was published on March 8, 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. No authentication or special privileges are required for exploitation.

Technical description

GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 non-authenticated user can remotely instantiate object of any class existing in the GLPI environment that can be used to carry out malicious attacks, or to start a “POP chain”. As an example of direct impact, this vulnerability affects integrity of the GLPI core platform and third-party plugins runtime misusing classes which implement some sensitive operations in their constructors or destructors. This is fixed in version 9.5.4.

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

Refpacketstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.htmlGitHubgithub.com/glpi-project/glpi/releases/tag/9.5.4GitHubgithub.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwpRefpacketstormsecurity.com/files/161680/GLPI-9.5.3-Unsafe-Reflection.htmlGitHubgithub.com/glpi-project/glpi/releases/tag/9.5.4GitHubgithub.com/glpi-project/glpi/security/advisories/GHSA-qmw7-w2m4-rjwp

How CyberStrike helps

Frequently asked questions

What is CVE-2021-21327?

CVE-2021-21327 is a medium-severity vulnerability. It was published on March 8, 2021 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2021-21327?

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-21327?

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-2021-21327?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-21327 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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