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CVE-2021-31805

9.8 · CRITICAL

The fix issued for CVE-2020-17530 was incomplete.

Published Apr 12, 2022CWE-917EPSS 85.43%

Overview

CVE-2021-31805 is a critical-severity vulnerability. It was published on April 12, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.

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/2022/04/12/6Refcwiki.apache.org/confluence/display/WW/S2-062Refsecurity.netapp.com/advisory/ntap-20220420-0001/Refwww.oracle.com/security-alerts/cpujul2022.htmlRefwww.openwall.com/lists/oss-security/2022/04/12/6Refcwiki.apache.org/confluence/display/WW/S2-062Refsecurity.netapp.com/advisory/ntap-20220420-0001/Refwww.oracle.com/security-alerts/cpujul2022.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-31805?

CVE-2021-31805 is a critical-severity vulnerability. It was published on April 12, 2022 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2021-31805?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-31805?

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-2021-31805?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-31805 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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