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CVE-2021-30463

7.8 · HIGH

VestaCP through 0.9.8-24 allows attackers to gain privileges by creating symlinks to files for which they lack permissions.

Published Apr 8, 2021CWE-59EPSS 0.50%

Overview

CVE-2021-30463 is a high-severity vulnerability. It was published on April 8, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

VestaCP through 0.9.8-24 allows attackers to gain privileges by creating symlinks to files for which they lack permissions. After reading the RKEY value from user.conf under the /usr/local/vesta/data/users/admin directory, the admin password can be changed via a /reset/?action=confirm&user=admin&code= URI. This occurs because chmod is used unsafely.

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

Refssd-disclosure.com/ssd-advisory-vestacp-lpe-vulnerabilities/Refssd-disclosure.com/ssd-advisory-vestacp-lpe-vulnerabilities/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-30463?

CVE-2021-30463 is a high-severity vulnerability. It was published on April 8, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2021-30463?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-30463?

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-2021-30463?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-30463 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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