Actively exploited · Published Jan 10, 2013 · Assigned by oracle
CVE-2013-0422
Critical 9.8 Exploited Ransomware
In plain English
A critical-severity improper access control in Java Runtime Environment (JRE) from Oracle. Attackers are actively exploiting it in the wild (listed by CISA on May 25, 2022). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 97.1% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Jun 15, 2022.
Official 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.
Affected products (as reported)
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- RHSA-2013:0156 vendor-advisory, x_refsource_REDHAT
- http://malware.dontneedcoffee.com/2013/01/0-day-17u10-spotted-in-while-disable.html x_refsource_MISC
- MDVSA-2013:095 vendor-advisory, x_refsource_MANDRIVA
- http://blog.fuseyism.com/index.php/2013/01/15/security-icedtea-2-1-4-2-2-4-2-3-4-released/ x_refsource_MISC
- openSUSE-SU-2013:0199 vendor-advisory, x_refsource_SUSE
- RHSA-2013:0165 vendor-advisory, x_refsource_REDHAT
- VU#625617 third-party-advisory, x_refsource_CERT-VN
- TA13-010A third-party-advisory, x_refsource_CERT
- https://partners.immunityinc.com/idocs/Java%20MBeanInstantiator.findClass%200day%20Analysis.pdf x_refsource_MISC
- http://blog.fireeye.com/research/2013/01/happy-new-year-from-new-java-zero-day.html x_refsource_MISC
- https://www-304.ibm.com/connections/blogs/PSIRT/entry/oracle_java_7_security_manager_bypass_vulnerability_cve_2013_04224?lang=en_us x_refsource_MISC
- USN-1693-1 vendor-advisory, x_refsource_UBUNTU
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0018 x_refsource_CONFIRM
- http://immunityproducts.blogspot.ca/2013/01/confirmed-java-only-fixed-one-of-two.html x_refsource_MISC
- https://threatpost.com/en_us/blogs/nasty-new-java-zero-day-found-exploit-kits-already-have-it-011013 x_refsource_MISC
- 20130110 [SE-2012-01] 'Fix' for Issue 32 exploited by new Java 0-day code mailing-list, x_refsource_BUGTRAQ
- http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.html x_refsource_CONFIRM
- http://krebsonsecurity.com/2013/01/zero-day-java-exploit-debuts-in-crimeware/ x_refsource_MISC
- http://labs.alienvault.com/labs/index.php/2013/new-year-new-java-zeroday/ x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-0422 government-resource