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CVE-2016-4437

9.8 · CRITICALActively Exploited

Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an u…

Published Jun 7, 2016CWE-321EPSS 93.04%

Overview

CVE-2016-4437 is a critical-severity vulnerability. It was published on June 7, 2016 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

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

Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an unspecified request parameter.

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/137310/Apache-Shiro-1.2.4-Information-Disclosure.htmlRefpacketstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.htmlRefrhn.redhat.com/errata/RHSA-2016-2035.htmlRefrhn.redhat.com/errata/RHSA-2016-2036.htmlRefwww.securityfocus.com/archive/1/538570/100/0/threadedRefwww.securityfocus.com/bid/91024Reflists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3ERefpacketstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.htmlRefpacketstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.htmlRefrhn.redhat.com/errata/RHSA-2016-2035.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-4437?

CVE-2016-4437 is a critical-severity vulnerability. It was published on June 7, 2016 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2016-4437?

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-2016-4437?

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-2016-4437?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-4437 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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