Vulnerability identifier: #VU4554

Vulnerability risk: Critical

CVSSv3.1: 9.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2013-0422

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Oracle Java SE
Universal components / Libraries / Software for developers

Vendor: Oracle

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to errors involving Java Management Extensions (JMX) MBean components. A remote attacker can create specially crafted Web site containing a malicious Java applet, trick the victim into opening it, invoke the setSecurityManager() function and execute arbitrary code outside the sandbox with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Oracle Java SE: 7u2 - 7u11, 5 Update 33 - 5 Update 40, 6u10 - 6u41

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External links
http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.