Oracle Java 1.7.x setSecurityManager access control

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Oracle Java 1.7.x (Programming Language Software) and classified as very critical. This issue affects the function setSecurityManager of the file java.lang.invoke.methodhandles.lookup.checksecuritymanager. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 01/10/2013. The weakness was presented 01/12/2013 (Website). The advisory is shared at The identification of this vulnerability is CVE-2013-0422 since 12/07/2012. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/26/2024). It is expected to see the exploit prices for this product decreasing in the near future.MITRE ATT&CK project uses the attack technique T1068 for this issue. Due to its background and reception, this vulnerability has a historic impact.

A public exploit has been developed by metasploit and been published before and not just after the advisory. The exploit is available at It is declared as highly functional. We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 63581 (CentOS 5 / 6 : java-1.7.0-openjdk (CESA-2013:0165)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120799 (Oracle Java Runtime Environment Remote Code Execution Vulnerabilities). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 05/25/2022 with a due date of 06/15/2022:

Apply updates per vendor instructions.

Upgrading to version 7 Update 11 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 1 days after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 24798. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12726.

The vulnerability is also documented in the databases at X-Force (81117), Tenable (63581) and Exploit-DB (24045). is providing further details.







CPE 2.3info

CPE 2.2info



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VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.6

VulDB Base Score: 9.0
VulDB Temp Score: 8.6
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Class: Access control
CWE: CWE-264

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: metasploit
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Nessus ID: 63581
Nessus Name: CentOS 5 / 6 : java-1.7.0-openjdk (CESA-2013:0165)
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OpenVAS ID: 881557
OpenVAS Name: CentOS Update for java CESA-2013:0165 centos5
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Saint ID: exploit_info/java_MbeanInstantiator_findClass_recursive_reflection
Saint Name: Java MBeanInstantiator.findClass and Recursive Reflection Sandbox Escape

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MetaSploit ID: java_jre17_jmxbean.rb
MetaSploit Name: Java Applet JMX Remote Code Execution
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Recommended: Upgrade
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Upgrade: Java 7 Update 11

Snort ID: 24798
Snort Message: EXPLOIT-KIT Possible malicious Jar download attempt - specific-structure
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Suricata ID: 2016227
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12/07/2012 🔍
01/10/2013 +34 days 🔍
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01/13/2013 +1 days 🔍
01/13/2013 +0 days 🔍
01/17/2013 +4 days 🔍
04/26/2024 +4117 days 🔍



Status: Confirmed
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CVE: CVE-2013-0422 (🔍)

X-Force: 81117
SecurityTracker: 1027972
Vulnerability Center: 38010 - Oracle JRE 7 Update 10 and Earlier MBeanInstantiator Allows Remote Code Execution - CVE-2013-0422, Critical
SecurityFocus: 57246 - Oracle Java Runtime Environment CVE-2013-0422 Multiple Remote Code Execution Vulnerabilities
Secunia: 51820
OSVDB: 89059 - CVE-2013-0422 - Oracle - Java SE - Multiple Unspecified Issues

scip Labs:
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Created: 01/11/2013 04:01 PM
Updated: 04/26/2024 02:18 PM
Changes: 01/11/2013 04:01 PM (115), 07/24/2019 02:17 PM (4), 04/26/2024 02:18 PM (24)
Complete: 🔍
Cache ID: 3:C6C:40


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