Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2013-0422

Oracle JRE Remote Code Execution Vulnerability

CriticalExploitation confirmedCISA KEV Used by ransomware
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Java Runtime Environment (JRE), fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Jun 15, 2022.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorSource
Java Runtime Environment (JRE)OracleKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2013-0422 scored CVSS 9.8: Oracle Java Runtime Environment (JRE), Oracle JRE Remote Code Execution Vulnerability

    CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched Java Runtime Environment (JRE) systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2013-0422
  • blog.fireeye.com http://blog.fireeye.com/research/2013/01/happy-new-year-from-new-java-zero-day.html
  • blog.fuseyism.com http://blog.fuseyism.com/index.php/2013/01/15/security-icedtea-2-1-4-2-2-4-2-3-4-released/
  • immunityproducts.blogspot.ca http://immunityproducts.blogspot.ca/2013/01/confirmed-java-only-fixed-one-of-two.html
  • krebsonsecurity.com http://krebsonsecurity.com/2013/01/zero-day-java-exploit-debuts-in-crimeware/
  • labs.alienvault.com http://labs.alienvault.com/labs/index.php/2013/new-year-new-java-zeroday/
  • lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00025.html
  • malware.dontneedcoffee.com http://malware.dontneedcoffee.com/2013/01/0-day-17u10-spotted-in-while-disable.html
  • rhn.redhat.com http://rhn.redhat.com/errata/RHSA-2013-0156.html
  • rhn.redhat.com http://rhn.redhat.com/errata/RHSA-2013-0165.html
  • seclists.org http://seclists.org/bugtraq/2013/Jan/48
  • kb.cert.org http://www.kb.cert.org/vuls/id/625617
  • mandriva.com http://www.mandriva.com/security/advisories?name=MDVSA-2013:095
  • oracle.com http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.html
  • ubuntu.com http://www.ubuntu.com/usn/USN-1693-1
  • us-cert.gov http://www.us-cert.gov/cas/techalerts/TA13-010A.html
  • partners.immunityinc.com https://partners.immunityinc.com/idocs/Java%20MBeanInstantiator.findClass%200day%20Analysis.pdf
  • threatpost.com https://threatpost.com/en_us/blogs/nasty-new-java-zero-day-found-exploit-kits-already-have-it-011013
  • wiki.mageia.org https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0018
  • www-304.ibm.com https://www-304.ibm.com/connections/blogs/PSIRT/entry/oracle_java_7_security_manager_bypass_vulnerability_cve_…
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-0422