Zero-day vulnerability in Oracle Java SE

Array indexing error
CVE-2013-2465

The exploit was released by security research group Packet Storm Security.

Known malware:

Styx exploit kit, previously known as Kein
Fiesta EK

Vulnerability details

Advisory: SB2013061801 - Remote code execution in Oracle Java SE

Vulnerable component: Oracle Java SE

CVE-ID: CVE-2013-2465

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-129 - Improper Validation of Array Index

Description:

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

The weakness exists due to an array indexing error in the storeImageArray() function in awt.dll. A remote attacker can execute arbitrary code with privileges of the current user or targeted application process.

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

Note: the vulnerability was being actively exploited.

Public Exploits:

- Java - storeImageArray() Invalid Array Indexing (Metasploit) [Exploit-DB]

External links:

http://www.oracle.com/technetwork/topics/security/javacpujun2013-1899847.html
https://www.symantec.com/security_response/attacksignatures/detail.jsp?asid=26978
https://www.zscaler.com/blogs/research/exploring-java-vulnerability-cve-2013-2465-used-fiesta-ek
http://infosecdailydigest.com/2013/08/24/metasploit-module-demo-for-cve-2013-2465-java-storeimagearr...
https://sgros-students.blogspot.com/2014/01/java-cve-2013-2465-vulnerability-and.html
http://www.pcworld.com/article/2046821/cybercriminals-add-new-exploit-for-recently-patched-java-vuln...

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.