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CVE-2021-43999

8.8 · HIGH

Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider.

Published Jan 11, 2022CWE-287EPSS 1.78%

Overview

CVE-2021-43999 is a high-severity vulnerability. It was published on January 11, 2022 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

Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If SAML support is enabled, this may allow a malicious user to assume the identity of another Guacamole user.

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.openwall.com/lists/oss-security/2022/01/11/7Reflists.apache.org/thread/4dt9h5mo4o9rxlgxm3rp8wfqdtdjn2z9Refwww.openwall.com/lists/oss-security/2022/01/11/7Reflists.apache.org/thread/4dt9h5mo4o9rxlgxm3rp8wfqdtdjn2z9

How CyberStrike helps

Frequently asked questions

What is CVE-2021-43999?

CVE-2021-43999 is a high-severity vulnerability. It was published on January 11, 2022 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-43999?

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-2021-43999?

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-2021-43999?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-43999 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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