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CVE-2012-4681

9.8 · CRITICALActively Exploited

Multiple vulnerabilities in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 6 and earlier allow remote attackers to execute arbitrary code via a crafted applet that bypasses…

Published Aug 28, 2012oracleCWE-284EPSS 98.54%

Overview

CVE-2012-4681 is a critical-severity vulnerability affecting oracle jdk. It was published on August 28, 2012 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

Multiple vulnerabilities in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 6 and earlier allow remote attackers to execute arbitrary code via a crafted applet that bypasses SecurityManager restrictions by (1) using com.sun.beans.finder.ClassFinder.findClass and leveraging an exception with the forName method to access restricted classes from arbitrary packages such as sun.awt.SunToolkit, then (2) using "reflection with a trusted immediate caller" to leverage the getField method to access and modify private fields, as exploited in the wild in August 2012 using Gondzz.class and Gondvv.class.

Remediation

Check the references section for vendor advisories and patches from oracle. Update jdk to the latest patched version. 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.

Affected products

VendorProductVersionsStatus

References

Refblog.fireeye.com/research/2012/08/zero-day-season-is-not-over-yet.htmlRefimmunityproducts.blogspot.com/2012/08/java-0day-analysis-cve-2012-4681.htmlReflabs.alienvault.com/labs/index.php/2012/new-java-0day-exploited-in-the-wild/Reflists.opensuse.org/opensuse-security-announce/2012-09/msg00032.htmlReflists.opensuse.org/opensuse-security-announce/2012-10/msg00016.htmlRefmarc.info/?l=bugtraq&m=135109152819176&w=2Refrhn.redhat.com/errata/RHSA-2012-1225.htmlRefsecunia.com/advisories/51044Refwww.deependresearch.org/2012/08/java-7-vulnerability-analysis.htmlRefwww.oracle.com/technetwork/topics/security/alert-cve-2012-4681-1835715.html

How CyberStrike helps

Frequently asked questions

What is CVE-2012-4681?

CVE-2012-4681 is a critical-severity vulnerability affecting oracle jdk. It was published on August 28, 2012 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-2012-4681?

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-2012-4681?

Check the references section for vendor advisories and patches from oracle. Update jdk to the latest patched version. 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-2012-4681?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-4681 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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