Multiple vulnerabilities in IBM Java SDK affect AIX

IBM SECURITY ADVISORY

First Issued: Thu Feb 25 08:44:57 CST 2016

The most recent version of this document is available here:

http://aix.software.ibm.com/aix/efixes/security/java_jan2016_advisory.asc
https://aix.software.ibm.com/aix/efixes/security/java_jan2016_advisory.asc
ftp://aix.software.ibm.com/aix/efixes/security/java_jan2016_advisory.asc

Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect AIX
CVE-2015-8472 CVE-2016-0475 CVE-2016-0466 CVE-2016-0402 CVE-2015-7575
CVE-2016-0448 CVE-2016-0494 CVE-2016-0483 CVE-2015-5041 CVE-2015-7981
CVE-2015-8126 CVE-2015-8540

===============================================================================

SUMMARY:

There are multiple vulnerabilities in IBM SDK Java Technology Edition,
Versions 6, 7, 7.1, 8 that are used by AIX. These issues were disclosed
as part of the IBM Java SDK updates in January 2016 and includes the
vulnerability commonly referred to as "SLOTH".

===============================================================================

VULNERABILITY DETAILS:

CVEID: CVE-2015-8472 
DESCRIPTION: libpng is vulnerable to a buffer overflow, caused by improper
    bounds checking by the png_get_PLTE() and png_set_PLTE() functions. By
    persuading a victim to open a specially crafted PNG image, a remote
    attacker could overflow a buffer and execute arbitrary code on the
    system or cause the application to crash.
CVSS Base Score: 6.3 
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109392 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)

CVEID: CVE-2016-0475
DESCRIPTION: An unspecified vulnerability in Oracle Java SE Java SE
    Embedded and Jrockit related to the Libraries component has partial
    confidentiality impact, partial integrity impact, and no availability
    impact.
CVSS Base Score: 5.8
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109946 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N)

CVEID: CVE-2016-0466
DESCRIPTION: An unspecified vulnerability in Oracle Java SE Java SE
    Embedded and Jrockit related to the JAXP component could allow a
    remote attacker to cause a denial of service resulting in a partial
    availability impact using unknown attack vectors.
CVSS Base Score: 5
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109948 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID: CVE-2016-0402
DESCRIPTION: An unspecified vulnerability in Oracle Java SE and Java SE
    Embedded related to the Networking component has no confidentiality
    impact, partial integrity impact, and no availability impact.
CVSS Base Score: 5
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109947 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVEID: CVE-2015-7575
DESCRIPTION: The TLS protocol could allow weaker than expected security
    caused by a collision attack when using the MD5 hash function for
    signing a ServerKeyExchange message during a TLS handshake. An
    attacker could exploit this vulnerability using man-in-the-middle
    techniques to impersonate a TLS server and obtain credentials.
    This vulnerability is commonly referred to as "SLOTH".
CVSS Base Score: 7.1
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109415 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N)

CVEID: CVE-2016-0448
DESCRIPTION: An unspecified vulnerability in Oracle Java SE and Java SE
    Embedded related to the JMX component could allow a remote attacker to
    obtain sensitive information resulting in a partial confidentiality
    impact using unknown attack vectors.
CVSS Base Score: 4
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109949 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVEID: CVE-2016-0494
DESCRIPTION: An unspecified vulnerability in Oracle Java SE and Java SE
    Embedded related to the 2D 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/109944 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVEID: CVE-2016-0483
DESCRIPTION: An unspecified vulnerability in Oracle Java SE Java SE
    Embedded and Jrockit related to the AWT 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/109945 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVEID: CVE-2015-5041
DESCRIPTION: A flaw in the IBM J9 JVM allows code to invoke non-public
    interface methods under these circumstances. Untrusted code could
    potentially exploit this. This could lead to sensitive data being
    exposed to an attacker, or the attacker being able to inject bad data.
CVSS Base Score: 4.8
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/106719 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID: CVE-2015-7981
DESCRIPTION: libpng could allow a remote attacker to obtain sensitive
    information, caused by an out-of-bounds read in the
    png_convert_to_rfc1123 function. An attacker could exploit this
    vulnerability to obtain sensitive information.
CVSS Base Score: 5.3
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/107740 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2015-8126
DESCRIPTION: libpng is vulnerable to a buffer overflow, caused by improper
    bounds checking by the png_set_PLTE() and png_get_PLTE() functions. By
    persuading a victim to open a specially-crafted PNG file, a remote
    attacker could overflow a buffer and execute arbitrary code on the
    system.
CVSS Base Score: 7.8
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/108010 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVEID: CVE-2015-8540
DESCRIPTION: libpng is vulnerable to a buffer overflow, caused by a read
    underflow in png_check_keyword in pngwutil.c. By sending an overly
    long argument, a remote attacker could overflow a buffer and execute
    arbitrary code on the system or cause the application to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See
    https://exchange.xforce.ibmcloud.com/vulnerabilities/109219 for the
    current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)


AFFECTED PRODUCTS AND VERSIONS:

    AIX 5.3, 6.1, 7.1, 7.2
    VIOS 2.2.x

    The following fileset levels (VRMF) are vulnerable, if the 
    respective Java version is installed:
    For Java6:  Less than 6.0.0.535
    For Java7:  Less than 7.0.0.320
    For Java7.1:  Less than 7.1.0.200
    For Java8:  Less than 8.0.0.120

    Note:  to find out whether the affected Java filesets are installed 
    on your systems, refer to the lslpp command found in AIX user's guide.

    Example:  lslpp -L | grep -i java


REMEDIATION:

    IBM SDK, Java Technology Edition, Version 6 Service Refresh 16 Fix 
    Pack 20 and subsequent releases:
32-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=6.0.0.0&platform=AIX+32-bit,+pSeries&function=all
64-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=6.0.0.0&platform=AIX+64-bit,+pSeries&function=all

    IBM SDK, Java Technology Edition, Version 7 Service Refresh 9 Fix
    Pack 30 and subsequent releases:
32-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=7.0.0.0&platform=AIX+32-bit,+pSeries&function=all 
64-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=7.0.0.0&platform=AIX+64-bit,+pSeries&function=all

    IBM SDK, Java Technology Edition, Version 7R1 Service Refresh 3
    Fix Pack 30 and subsequent releases:
32-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=7.1.0.0&platform=AIX+32-bit,+pSeries&function=all
64-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=7.1.0.0&platform=AIX+64-bit,+pSeries&function=all 

    IBM SDK, Java Technology Edition, Version 8 Service Refresh 2
    Fix Pack 10 and subsequent releases:
32-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=8.0.0.0&platform=AIX+32-bit,+pSeries&function=all 
64-bit: https://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm~WebSphere&product=ibm/IBM+SDKs+for+Java+Technology/Java+Standard+Edition+%28Java+SE%29&release=8.0.0.0&platform=AIX+64-bit,+pSeries&function=all


WORKAROUNDS AND MITIGATIONS:

    For CVE-2015-7575:
        Users of Java 7 and later can address the issue by updating the
        /jre/lib/security/java.security file as follows (both steps are
        required): 
        
        Add MD5 to the jdk.certpath.disabledAlgorithms property -
        e.g. jdk.certpath.disabledAlgorithms=MD2, RSA keySize < 1024, MD5 

        Add MD5withRSA to the jdk.tls.disabledAlgorithms property -
        e.g. jdk.tls.disabledAlgorithms=SSLv3, RC4, DH keySize < 768,
        MD5withRSA

        Java 6 requires code changes in the JSSE component in addition to
        the java.security file modifications, so upgrading the JDK is the
        only solution.

===============================================================================

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Comments regarding the content of this announcement can be
directed to:

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To obtain the OpenSSL public key that can be used to verify the
signed advisories and ifixes:

    Download the key from our web page:

http://www.ibm.com/systems/resources/systems_p_os_aix_security_pubkey.txt

To obtain the PGP public key that can be used to communicate
securely with the AIX Security Team via [email protected] you
can either:

    A. Download the key from our web page:

http://www.ibm.com/systems/resources/systems_p_os_aix_security_pgppubkey.txt

    B. Download the key from a PGP Public Key Server. The key ID is:

        0x28BFAA12

Please contact your local IBM AIX support center for any
assistance.

REFERENCES:

Complete CVSS v2 Guide:
    http://www.first.org/cvss/v2/guide 
On-line Calculator v2:
    http://nvd.nist.gov/CVSS-v2-Calculator 
Complete CVSS v3 Guide:
    http://www.first.org/cvss/user-guide 
On-line Calculator v3:
    http://www.first.org/cvss/calculator/3.0 
IBM Java SDK Security Bulletin:
    http://www-01.ibm.com/support/docview.wss?uid=swg21974193

ACKNOWLEDGEMENTS:

CVE-2015-7575 was reported to IBM by Karthikeyan Bhargavan at INRIA in
Paris, France.

CHANGE HISTORY:

First Issued: Thu Feb 25 08:44:57 CST 2016  

===============================================================================

*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.