Security Bulletin: Multiple vulnerabilities in IBM Java SDK including Logjam affect IBM PureApplication System. (CVE-2015-4000, CVE-2015-2613, CVE-2015-2601, CVE-2015-2625, and CVE-2015-1931)

Summary

There are multiple vulnerabilities in IBM SDK Java Technology Edition, Version 6 and 7, that is used by IBM PureApplication System. These issues were disclosed as part of the IBM Java SDK updates in July 2015.

This bulletin also addresses the Logjam Attack on TLS connections using the Diffie-Hellman (DH) key exchange protocol affects.

Vulnerability Details

CVEID: CVE-2015-4000**
DESCRIPTION:** The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a DHE_EXPORT ciphersuite choice. An attacker could exploit this vulnerability using man-in-the-middle techniques to force a downgrade to 512-bit export-grade cipher. Successful exploitation could allow an attacker to recover the session key as well as modify the contents of the traffic. This vulnerability is commonly referred to as “Logjam”.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVEID: CVE-2015-2613**
DESCRIPTION:** An unspecified vulnerability related to the JCE component could allow a remote attacker to obtain sensitive information.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104734 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVEID: CVE-2015-2601**
DESCRIPTION:** An unspecified vulnerability related to the JCE component could allow a remote attacker to obtain sensitive information.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104733 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVEID: CVE-2015-2625**
DESCRIPTION:** An unspecified vulnerability related to the JSSE component could allow a remote attacker to obtain sensitive information.
CVSS Base Score: 2.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104743 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:H/Au:N/C:P/I:N/A:N)

CVEID: CVE-2015-1931**
DESCRIPTION:** IBM Java Security Components store plain text data in memory dumps, which could allow a local attacker to obtain information to aid in further attacks against the system.
CVSS Base Score: 2.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/102967 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)

Affected Products and Versions

IBM PureApplication System V2.1
IBM PureApplication System V2.0

Remediation/Fixes

The PureSystems Manager on IBM PureApplication System is affected. The solution is to upgrade the IBM PureApplication System to the following fix level:

IBM PureApplication System V2.1
Upgrade to IBM PureApplication System V2.1.2

IBM PureApplication System V2.0
Upgrade to IBM PureApplication System V2.0.0.1 Interim Fix 6

You should verify applying this configuration change does not cause any compatibility issues. If you change the default setting after applying the fix, you will expose yourself to the attack described above. IBM recommends that you review your entire environment to identify other areas where you have enabled the Diffie-Hellman key-exchange protocol used in TLS and take appropriate mitigation and remediation actions.

Workarounds and Mitigations

None