Security Bulletin
Summary
A potential vulnerability based on privilege escalation was addressed by IBM InfoSphere Information Server.
Vulnerability Details
DESCRIPTION: IBM InfoSphere Information Server could be subject to attacks based on privilege escalation due to inappropriate file permissions for files used by WebSphere Application Server Network Deployment.
CVSS Base score: 7.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/178412 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Affected Products and Versions
| Affected Product(s) | Version |
| InfoSphere Information Server, Information Server on Cloud | 11.7 |
| InfoSphere Information Server, Information Server on Cloud | 11.5 |
| InfoSphere Information Server | 11.3 |
If your Information Server installation uses WebSphere Application Server Network Deployment (WAS ND), it is affected if the following apply:
- was initially installed using a umask weaker than 022
Note that the install instructions indicate that umask 022 should be used.
-- or -- - is Information Server version 11.7.1.0 or versions 11.7.0.x, or such an installation was upgraded to a release after 11.7.1.0
Note:
1. Versions 11.5 and 11.3 are not impacted until they are upgraded to version 11.7.
2. A new installation of version 11.7.1.1 (or later) is not impacted.
Remediation/Fixes
You should do the following steps (only needed once over the lifetime of the installation):
Stand-alone deployment
1. In your WAS ND location, change directory to the directory containing the java folder.
2. chmod -R 755 java
Cluster deployment
1. On the machine where your deployment manager is installed
a. change directory to the directory containing the java folder within your WAS ND installation
b. chmod -R 755 java
2. On a machine where a custom profile is installed
a. change directory to the directory containing the java folder within your WAS ND installation
b. chmod -R 755 java
3. Repeat step 2 for each custom profile, and horizontal machine that is a member of the cluster.
Workarounds and Mitigations
Get Notified about Future Security Bulletins
References
Acknowledgement
The vulnerability was reported to IBM by Ashneel Prasad.
Change History
15 April 2020: Initial Publication
17 April 2020: Added acknowledgement
20 April 2020: Added versions 11.7.x.x as impacted irrespective of umask setting
08 July 2020: New installations of 11.7.1.1 or later are not impacted
*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.
Document Location
Worldwide
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Document Information
Modified date:
08 July 2020
UID
ibm16191679