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CVE-2021-20077

6.7 · MEDIUM

Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC…

Published Mar 19, 2021EPSS 0.35%

Overview

CVE-2021-20077 is a medium-severity vulnerability. It was published on March 19, 2021 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance. This could allow a privileged attacker to obtain the token.

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

Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-07Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-04-0Refwww.tenable.com/security/tns-2021-07

How CyberStrike helps

Frequently asked questions

What is CVE-2021-20077?

CVE-2021-20077 is a medium-severity vulnerability. It was published on March 19, 2021 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2021-20077?

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-20077?

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-2021-20077?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-20077 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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