A new Java vulnerability, CVE-2013-2423, was exploited in the wild on April 21, 2013. IBM X-Force information on CVE-2013-2423 (http://xforce.iss.net/xforce/xfdb/83591 This vulnerability reportedly can only be exploited as a client-side attack specifically targeting the browser software located on a user's desktop and may allow malicious Java applets to be executed in the client-side browser. This vulnerability reportedly is not applicable to Java running on servers, desktop applications, nor embedded applications.
CVE ID: CVE-2013-2423
This bulletin lists the vulnerability that affects TBSM. Details about the issue are available on the IBM X-Force site. According to the report, this vulnerability can only be exploited as a client-side attack specifically targeting the browser software located on a user's desktop; for more information about client-side attacks see “Client-Side Attacks: An Overview. (http://books.google.com/books?id=izHrTu3dxAYC&lpg=PP1&pg=PA1#v=onepage&q&f=false)” This vulnerability is not applicable to Java running on servers, desktop applications, nor embedded applications. This vulnerability may allow malicious Java applets to be executed in the client-side browser
CVSS Base Score: 9.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/83591
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Clients who are using Oracle's JDK/JRE 7 should install an updated Oracle JDK/JRE 7 to address the potential risk of exploitation. Oracle Security Alert for CVE-2013-2423 (http://www.oracle.com/technetwork/topics/security/javacpuapr2013-1928497.html). For those clients who are using IBM Windows JRE 7, you should replace the IBM Windows JRE 7 with the updated Oracle JDK/JRE 7 to address the potential risk of exploitation.
· Complete CVSS Guide
· On-line Calculator V2
· X-Force Vulnerability Database http://xforce.iss.net/xforce/xfdb/83591
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Original Copy Published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Flash.
Note: According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.