Security Bulletin
Summary
There is a remote code execution vulnerability in the JSF Sun Reference Implementation 1.2 used by WebSphere Application Server. The JSF Sun Reference Implementation 1.2 is used as the default in WebSphere Application Server v7.0, other versions it is not the default.
Vulnerability Details
CVEID: Not Applicable
DESCRIPTION: Apache MyFaces and Oracle Mojarra could allow a remote attacker to execute arbitrary code on the system, caused by improper configuration of ViewState settings. If ViewState is configured to use unencrypted state information, an attacker could exploit this vulnerability to execute any code residing in the server's classpath.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/145172 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:H)
Affected Products and Versions
This vulnerability affects the following versions and releases of IBM WebSphere Application Server:
- Version 8.5
- Version 8.0
- Version 7.0
Remediation/Fixes
The recommended solution is to apply the interim fix, Fix Pack or PTF containing APARs PI99524 for each named product as soon as practical. JSF SunRI 1.2 is the default implementation for WebSphere Application Server Version 7. For Version 8.0 and Version 8.5 , JSF SunRI 1.2 is not the default JSF, you would only be vulnerable if you have changed to use JSF SunRI 1.2.
For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition using JSF Sun Reference Implementation 1.2:
For V8.5.0.0 through 8.5.5.14: (not default JSF)
· Upgrade to minimal fix pack levels as required by interim fixes and then apply Interim Fix PI99524
--OR--
· Apply Fix Pack 8.5.5.15 or later (targeted availability 1Q2019).
For V8.0.0.0 through 8.0.0.15: (not default JSF)
· Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI99524
For V7.0.0.0 through 7.0.0.45:
· Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PI99524
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.
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Important Note
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References
Acknowledgement
The vulnerability was reported to IBM by dongyicheng <dalbert@163.com>
Change History
14 August 2018: 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.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
15 August 2018
UID
ibm10716525