Vulnerability identifier: #VU6171

Vulnerability risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2013-2423

CWE-ID: CWE-284

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 bypass security restrictions on the target system.

The weakness caused by weak access control on static classes. Tricking the victim into running a malicious Java applet a remote attacker can bypass Java sandbox restrictions.

Successful exploitation of the vulnerability results in security bypass.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Oracle Java SE: 7u2 - 7u7, 5 Update 31 - 5 Update 45, 6u10 - 6u121

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External links
http://www.oracle.com/technetwork/topics/security/javacpuapr2013-1928497.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.