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AUSCERT External Security Bulletin Redistribution
Security Bulletin: Denial of service vulnerability in
WebSphere Application Server Liberty (CVE-2019-12402)
30 October 2019
AusCERT Security Bulletin Summary
Product: IBM WebSphere Application Server
Operating System: AIX
Impact/Access: Denial of Service -- Remote with User Interaction
CVE Names: CVE-2019-12402
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Security Bulletin: Denial of service vulnerability in WebSphere Application
Server Liberty (CVE-2019-12402)
More support for:
WebSphere Application Server
AIX; HP-UX; IBM i; Linux; Solaris; Windows; z/OS
29 October 2019
There is a denial of service vulnerability in WebSphere Application Server
Liberty. This vulnerability has been addressed.
DESCRIPTION: Apache Commons Compress is vulnerable to a denial of service,
caused by an error in the internal file name encoding algorithm. By persuading
a victim to open specially crafted ZIP archive containing malicious input, a
remote attacker could exploit this vulnerability to cause the application to
enter into an infinite loop.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
165956 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
Affected Products and Versions
These vulnerabilities affect the following versions and releases of IBM
WebSphere Application Server:
The recommended solution is to apply the interim fix, Fix Pack or PTF
containing the APAR for each named product as soon as practical.
For WebSphere Application Server Liberty using collectiveMember-1.0 or
. Apply Fix Pack 188.8.131.52 or later.
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Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
29 October 2019:original document 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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