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AUSCERT External Security Bulletin Redistribution
Security Bulletin: A vulnerability in Expat XML parser
affects IBM Security Network Protection (CVE-2016-0718)
25 January 2017
AusCERT Security Bulletin Summary
Product: IBM Security Network Protection
Operating System: Network Appliance
Impact/Access: Denial of Service -- Remote/Unauthenticated
Execute Arbitrary Code/Commands -- Remote/Unauthenticated
CVE Names: CVE-2016-0718
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Security Bulletin: A vulnerability in Expat XML parser affects IBM Security
Network Protection (CVE-2016-0718)
More support for:
IBM Security Network Protection
5.3.1, 5.3.2, 5.3.3
23 January 2017
A security vulnerability has been discovered in Expat XML parser, which is
used by IBM Security Network Protection.
Expat is vulnerable to a buffer overflow, caused by improper bounds checking
when processing malformed XML data. By using the Expat library, a remote
attacker could overflow a buffer and execute arbitrary code on the system
with the privileges of the victim or cause the application to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See
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
IBM Security Network Protection 5.3.1
IBM Security Network Protection 5.3.2
IBM Security Network Protection 5.3.3
Product VRMF Remediation/First Fix
IBM Security Network Protection Firmware version 5.3.1 Download Firmware 184.108.40.206 from IBM Security License Key and Download Center and upload and install via the Available Updates page of the Local Management Interface.
IBM Security Network Protection Firmware version 5.3.2 Install Firmware 220.127.116.11 from IBM Security License Key and Download Center and upload and install via the Available Updates page of the Local Management Interface.
IBM Security Network Protection Firmware version 5.3.3 Install Firmware 18.104.22.168 from the Available Updates page of the Local Management Interface, or by performing a One Time Scheduled Installation from SiteProtector.
Workarounds and Mitigations
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Complete CVSS v3 Guide
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IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
23 January 2017: 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.
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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