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AUSCERT External Security Bulletin Redistribution
ESB-2015.2208
Security Bulletin: Multiple vulnerabilities in IBM Java SDK including
Logjam affect IBM OS Images for Red Hat Linux Systems,
AIX-based, and Windows-based deployments
24 August 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Java SDK
Publisher: IBM
Operating System: AIX
Linux variants
Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Access Privileged Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-4000 CVE-2015-2625 CVE-2015-2613
CVE-2015-2601 CVE-2015-2590 CVE-2015-1931
Reference: ASB-2015.0070
ESB-2015.1453.2
ESB-2015.1452
ESB-2015.1445
ESB-2015.1443
ESB-2015.1432
ESB-2015.1425
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21964981
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Security Bulletin:Multiple vulnerabilities in IBM Java SDK including Logjam
affect IBM OS Images for Red Hat Linux Systems, AIX-based, and Windows-based
deployments. (CVE-2015-2590, CVE-2015-2613, CVE-2015-2601, CVE-2015-2625,
CVE-2015-1931, and CVE-201
Security Bulletin
Document information
More support for:
PureApplication System
Security
Software version:
2.1.0.0, 2.1.0.1, 2.1.0.2
Operating system(s):
AIX, Linux, Windows
Reference #:
1964981
Modified date:
2015-08-21
Summary
There are multiple vulnerabilities in IBM SDK Java Technology Edition used by
IBM OS Images for Red Hat Linux Systems, AIX-based, and Windows-based
deployments. 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-2015-2590
DESCRIPTION: An unspecified vulnerability related to the Libraries component
has complete confidentiality impact, complete integrity impact, and complete
availability impact.
CVSS Base Score: 10
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/104724 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)
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 http://xforce.iss.net/xforce/xfdb/102967 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N)
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)
Affected Products and Versions
IBM OS Image for Red Hat Linux Systems 3.0.0.0 and earlier.
IBM OS Image for AIX Systems 2.1.1.0 and earlier.
Remediation/Fixes
Virtual machines deployed from IBM PureApplication Systems are affected. This
includes RedHat Linux, AIX-based, and Windows-based deployments. The solution
is to apply the following IBM PureApplication System fix to the deployed
virtual machines.
http://www.ibm.com/support/fixcentral/swg/quickorder?parent=PureSystems&product=ibm/WebSphere/PureApplication+System&release=2.0.0.1&platform=All&function=fixId&fixids=Java_Update_AIX_CVE-2015-2590,Java_Update_Windows_CVE-2015-2590,Java_Update_Linux_CVE-2015-2590&includeSupersedes=0&source=fc
1. Import the fix into the Emergency Fix catalogue.
2. For deployed instances, apply this emergency fix on the Virtual Instance.
3. Restart the deployed instance after the fix is applied.
As the length of the server key size is increased, the amount of CPU required
for full TLS/SSL handshake can significantly increase. Please carefully test
and assess the impact to your CPU requirements to ensure sufficient CPU
resources, otherwise the system availability may be impacted.
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
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References
Complete CVSS v2 Guide
On-line Calculator v2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
CVE-2015-4000 was reported to IBM by The WeakDH team at https://weakdh.org
Change History
21 August 2015: Original Version 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 Security Bulletin.
Disclaimer
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.
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