ESB-2018.2241 - [Win][Linux][AIX] IBM Host On-Demand: Multiple vulnerabilities 2018-08-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2241
         Security Bulletin : Multiple vulnerabilities in IBM GSKit
                        affect IBM Host On-Demand.
                               2 August 2018

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

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Host On-Demand
Publisher:         IBM
Operating System:  AIX
                   Linux variants
                   Windows
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
                   Denial of Service              -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1428 CVE-2018-1427 CVE-2018-1426
                   CVE-2017-3736 CVE-2017-3732 CVE-2016-0705

Reference:         ASB-2018.0170
                   ASB-2018.0093
                   ASB-2018.0092
                   ASB-2018.0088
                   ASB-2018.0086
                   ASB-2018.0083
                   ASB-2018.0081

Original Bulletin: 
   https://www-01.ibm.com/support/docview.wss?uid=ibm10716977

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Security Bulletin : Multiple vulnerabilities in IBM GSKit affect IBM Host
On-Demand.

Document information
More support for: Rational Host On-Demand
Software version: 12.0.0, 12.0.0.1, 12.0.1, 12.0.2, 12.0.3, 13.0.0

Operating system(s): AIX, Linux, Windows

Reference #: 0716977

Modified date: 01 August 2018

Security Bulletin

Summary

GSKit is an IBM component that is used by Host On-Demand. GSKit that is shipped
with Host On-Demand contains multiple security vulnerabilities .Host On-Demand
has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2018-1426
DESCRIPTION: IBM GSKit duplicates the PRNG state across fork() system calls
when multiple ICC instances are loaded which could result in duplicate Session
IDs and a risk of duplicate key material.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
139071 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

CVEID: CVE-2018-1427
DESCRIPTION: IBM GSKit contains several environment variables that a local
attacker could overflow and cause a denial of service.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
139072 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2018-1428
DESCRIPTION: IBM GSKit uses weaker than expected cryptographic algorithms that
could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
139073 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2017-3736
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by a carry propagation flaw in the x86_64 Montgomery
squaring function bn_sqrx8x_internal(). An attacker with online access to an
unpatched system could exploit this vulnerability to obtain information about
the private key.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
134397 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2017-3732
DESCRIPTION: OpenSSL could allow a remote attacker to obtain sensitive
information, caused by a carry propagating bug in the x86_64 Montgomery
squaring procedure. An attacker could exploit this vulnerability to obtain
information about the private key.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
121313 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-2016-0705
DESCRIPTION:  OpenSSL is vulnerable to a denial of service, caused by a
double-free error when parsing DSA private keys. An attacker could exploit this
vulnerability to corrupt memory and cause a denial of service.
CVSS Base Score: 3.7
CVSS Temporal Score: See:  https://exchange.xforce.ibmcloud.com/vulnerabilities
/111140  for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Products and Versions

Host On-Demand 13.0

Host On-Demand 12.0, 12.0.0.1, 12.0.1, 12.0.2, 12.0.3

Remediation/Fixes

Product            VRMF         Remediation

Host On-Demand     12.0         Upgrade to Host On-Demand 12.0.4

Host On-Demand     12.0.0.1     Upgrade to Host On-Demand 12.0.4

Host On-Demand     12.0.1       Upgrade to Host On-Demand 12.0.4

Host On-Demand     12.0.2       Upgrade to Host On-Demand 12.0.4

Host On-Demand     12.0.3       Upgrade to Host On-Demand 12.0.4

Host On-Demand     13.0         Upgrade to Host On-Demand 13.0.1

Workarounds and Mitigations

None

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Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

13 July 2018:  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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