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AUSCERT External Security Bulletin Redistribution
ESB-2018.3573
Potential directory traversal vulnerability in WebSphere
Application Server (CVE-2018-1797)
15 November 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM WebSphere Application Server
Publisher: IBM
Operating System: AIX
HP-UX
IBM i
Linux variants
Solaris
Windows
z/OS
Impact/Access: Create Arbitrary Files -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1797
Original Bulletin:
https://www.ibm.com/support/docview.wss?uid=ibm10730699
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Security Bulletin: Potential directory traversal vulnerability in WebSphere
Application Server (CVE-2018-1797)
Security Bulletin
Document information
Software version: 7.0, 8.0, 8.5, 9.0
Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS
Software edition: Advanced, Base, Developer, Enterprise, Express, Network
Deployment, Single Server
Reference #: 0730699
Modified date: 14 November 2018
Summary
There is a potential directory traversal vulnerability in WebSphere Application
Server (CVE-2018-1797). This is occurs when an Enterprise Bundle Archive (EBA)
is installed into the Application Server that has a path external to the EBA.
Vulnerability Details
CVEID: CVE-2018-1797
DESCRIPTION: IBM WebSphere Application Server using Enterprise bundle Archives
(EBA) could allow a local attacker to traverse directories on the system. By
persuading a victim to extract a specially-crafted ZIP archive containing "dot
dot slash" sequences (../), an attacker could exploit this vulnerability to
write to arbitrary files on the system. Note: This vulnerability is known as
"Zip-Slip".
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
149427 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N)
Affected Products and Versions
This vulnerability affects the following versions and releases of IBM WebSphere
Application Server:
* Version 9.0
* Version 8.5
* Version 8.0
* Version 7.0 Feature Pack for OSGi Applications and Java Persistence API
Remediation/Fixes
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 traditional and WebSphere Application Server
Hypervisor Edition:
For V9.0.0.0 through 9.0.0.9:
- - Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH02031
- --OR--
- - Apply Fix Pack 9.0.0.10 or later (targeted availability 4Q 2018).
For V8.5.0.0 through 8.5.5.14:
- - Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix PH02031
- --OR--
- - Apply Fix Pack 8.5.5.15 or later (targeted availability 1Q 2019).
For V8.0.0.0 through 8.0.0.15:
- - Upgrade to a minimal fix pack levels as required by interim fix and then
apply Interim Fix PH02031
For WebSphere Application Server V7 Feature Pack for OSGi Applications and
Java Persistence API 2.0:
- - Call IBM Support for the interim fix.
WebSphere Application Server V7 and V8 are no longer in full support; IBM
recommends upgrading to a fixed, supported version/release/platform of the
product.
Change History
14 November 2018: original document published
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