IBM WebSphere Cast Iron Security Bulletin: Multiple security vulnerabilities in IBM JRE 6 and IBM JRE 7

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VULNERABILITY DETAILS

There are multiple security vulnerabilities in the IBM Java Runtime Environment used in WebSphere Cast Iron.

CVEID: CVE-2014-0423

DESCRIPTION:

The DocumentHandler used by the java.beans.XMLDecoder implementation allows the use of external entities by default. This facilitates a variety of attacks via malicious XML data.

CVSS Base Score: 5.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/90340 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV/N:AC/L:Au/S:C/P:I/N:A/P)

CVEID: CVE-2014-0416

DESCRIPTION:

javax.security.auth.Subject is serializable but does not validate deserialized data properly. Malicious code could exploit this to construct an invalid Subject instance with content that differs from the advertised properties. In addition, if a server deserializes serialized data from untrusted sources, an attacker could insert an invalid instance of Subject class into a server Java process.

CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/90349 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV/N:AC/L:Au/N:C/N:I/P:A/N)

CVEID: CVE-2014-0411

DESCRIPTION:

Timing differences based on validity of TLS messages can be exploited to decrypt the entire session. The exploit is not trivial, requiring a man-in-the-middle position and a long time (around 20 hours).

CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/90357 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV/N:AC/H:Au/N:C/P:I/P:A/N)

*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.

AFFECTED PLATFORMS:
IBM WebSphere Cast Iron v6.0, v6.1 v6.3, v6.4 and v7.0 Studio, Virtual Appliance and Physical Appliance
IBM WebSphere Cast Iron v6.3 and v7.0 Live SaaS offering.

WORKAROUND:
None available; Apply the fix detailed below.

REMEDIATION:
Apply the fix detailed below.

FIX:

For WebSphere Cast Iron version v6.0 :
Install the v6.0.0.6 interim fix or upgrade to v6.1.0.15/v6.3.0.2/v6.4.0.1 by applying the relevant interim fix.

For WebSphere Cast Iron version v6.1 *:
Install the v6.1.0.15 interim fix or upgrade to v6.3.0.2/v6.4.0.1/v7.0.0.1 by applying the relevant interim fix/fixpack.

For IBM WebSphere Cast Iron v6.3 *:
Install the v6.3.0.2 interim fix or upgrade to v6.4.0.1/v7.0.0.1 by applying the relevant interim fix/fixpack.

For IBM WebSphere Cast Iron v6.4 *:
Install the v6.4.0.1 interim fix or upgrade to v7.0.0.1 by applying the fixpack.

For IBM WebSphere Cast Iron v7.0:
Upgrade to v7.0.0.1 by applying the fixpack.

* Upgrade to v7 should not be attempted on v6.1, v6.3, v6.4 virtual appliance if the appliance was originally a fresh install of v6 and later upgraded to a higher version. Please refer to this link.

The WebSphere Cast Iron V6.0 interim fix can be obtained via this link
The WebSphere Cast Iron V6.1 interim fix can be obtained via this link
The WebSphere Cast Iron V6.3 interim fix can be obtained via this link
The WebSphere Cast Iron V6.4 interim fix can be obtained via this link
The WebSphere Cast Iron V7.0.0.1 fixpack can be obtained via this link

SaaS offering (WebSphere Cast Iron Live v6.3):
The WebSphere Cast Iron V6.3 SaaS offering is scheduled to be updated during July 2014's maintenance window to address the IBM Java Security Vulnerability.

SaaS offering (WebSphere Cast Iron Live v7.0):

The WebSphere Cast Iron V7.0 SaaS offering is updated to address the IBM Java Security Vulnerability.

APAR LI77896 is targeted for availability in IBM WebSphere Cast Iron v6.0.0.7, v6.1.0.16, v6.3.0.3 and v6.4.0.2.

MITIGATION:
None known

REFERENCES:
Complete CVSS Guide (http://www.first.org/cvss/v2/guide)
On-line Calculator V2 (https://nvd.nist.gov/CVSS-v2-Calculator)

CVE-2014-0423(http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0423)
CVE-2014-0416(http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0416)
CVE-2014-0411(http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0411)


CHANGE HISTORY:
<2014/06/30>: Original Copy Published

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.