A fix is available for IBM SONAS, for the security issue that after changing password of administrative user, the password can be read by the root user from the shell command history.
One of the purposes of chuser command is to modify the password of an administrative user account in IBM SONAS.
When used with the -p argument, the chuser command records the administrator password in the shell command history. The shell command history can subsequently be read by the root user.
CVSS Base Score: 2.1
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/93345 for the current score
Affected Products and Versions
The product is affected when running a code releases 18.104.22.168 to 22.214.171.124
A fix for these issues is in version 126.96.36.199 of IBM SONAS.
Workarounds and Mitigations
1. Modify HISTIGNORE environment variable for root user, so that chuser command will not be included in shell bash history. You could add this environment variable to .bashrc file in home directory of root user.
2. After changing password using chuser command, the admin user may get root user to clear the shell command history of root user, using history -c command.
Mitigation(s) : A fix for these issues is in version 188.8.131.52 of IBM SONAS. Customers running an affected version of IBM SONAS should upgrade to 184.108.40.206 or a later version, so that the fix gets applied.
Get Notified about Future Security Bulletins
Thanks to Google, for identifying and reporting this issue to IBM.
*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.
17 June 2018