CVE-2013-0422: Oracle JRE Remote Code Execution Vulnerability

Vulnerability summary

CVE-2013-0422 is a high (CVSS 10.0) Improper Access Control vulnerability in Oracle Java Runtime Environment (JRE). It is known to be exploited: CISA lists it, first on 25-05-2022. It has been used in ransomware campaigns. EPSS estimates a 97.08% chance of exploitation in the next 30 days, higher than 99.8% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 10-01-2013
   PublishedVulnerability first disclosed.
2. 25-05-2022
   Added to CISA KEVExploitedOracle JRE Remote Code Execution Vulnerability
3. 15-06-2022
   CISA remediation dueDeadline passedApply updates per vendor instructions.
4. 22-10-2025
   Last modifiedVulnerability information updated.

Description

Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class references using the findClass method, and (2) using the Reflection API with recursion in a way that bypasses a security check by the java.lang.invoke.MethodHandles.Lookup.checkSecurityManager method due to the inability of the sun.reflect.Reflection.getCallerClass method to skip frames related to the new reflection API, as exploited in the wild in January 2013, as demonstrated by Blackhole and Nuclear Pack, and a different vulnerability than CVE-2012-4681 and CVE-2012-3174. NOTE: some parties have mapped the recursive Reflection API issue to CVE-2012-3174, but CVE-2012-3174 is for a different vulnerability whose details are not public as of 20130114. CVE-2013-0422 covers both the JMX/MBean and Reflection API issues. NOTE: it was originally reported that Java 6 was also vulnerable, but the reporter has retracted this claim, stating that Java 6 is not exploitable because the relevant code is called in a way that does not bypass security checks. NOTE: as of 20130114, a reliable third party has claimed that the findClass/MBeanInstantiator vector was not fixed in Oracle Java 7 Update 11. If there is still a vulnerable condition, then a separate CVE identifier might be created for the unfixed issue.

• CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.