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AUSCERT External Security Bulletin Redistribution
ESB-2019.1099
IBM Sterling Connect:Direct for UNIX Allows a User with Sudo Access
Restricted to Certain Connect:Direct Executable Files to
Expand Access Beyond the Restriction (CVE-2018-1903)
2 April 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Sterling Connect
Publisher: IBM
Operating System: AIX
Solaris
Linux variants
HP-UX
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-1903
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=ibm10875386
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Security Bulletin: IBM Sterling Connect:Direct for UNIX Allows a User with
Sudo Access Restricted to Certain Connect:Direct Executable Files to Expand
Access Beyond the Restriction (CVE-2018-1903)
Document information
More support for: Sterling Connect:Direct for UNIX
Component: --
Software version: 4.2.0, 4.3.0, 6.0.0
Operating system(s): AIX, HP-UX, Linux, Solaris
Reference #: 0875386
Modified date: 01 April 2019
Summary
UNIX system administrators may grant access to run certain executable files
with expanded privilege via the sudo utility. Connect:Direct for UNIX has a
vulnerability that could allow a user to escape this sudo executable file
restriction and perform unauthorized commands with expanded privilege.
Vulnerability Details
CVEID: CVE-2018-1903
DESCRIPTION: IBM Sterling Connect:Direct for UNIX could allow a user with
restricted sudo access on a system to manipulate CD UNIX to gain full sudo
access.
CVSS Base Score: 6.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
152532 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM Sterling Connect:Direct for Unix 6.0.0
IBM Sterling Connect:Direct for Unix 4.3.0
IBM Sterling Connect:Direct for Unix 4.2.0
Remediation/Fixes
+----------+---------+-------------------------------------------------------+
|V.R.M.F |APAR |Remediation/First Fix |
+----------+---------+-------------------------------------------------------+
|6.0.0 |IT26865 |Apply 6.0.0.0.iFix017, available in cumulative iFix018 |
| | |on Fix Central |
+----------+---------+-------------------------------------------------------+
|4.3.0 |IT26865 |Apply 4.3.0.0.iFix027, available in cumulative iFix029 |
| | |on Fix Central |
+----------+---------+-------------------------------------------------------+
|4.2.0 |IT26865 |Apply 4.2.0.4.iFix097, available in cumulative iFix098 |
| | |on Fix Central |
+----------+---------+-------------------------------------------------------+
For IBM Sterling Connect:Direct for Unix versions 4.1.0 and older, IBM
recommends upgrading to a fixed, supported version of the product.
Workarounds and Mitigations
None
Change History
29 March 2019: Original Version 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
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.
- --------------------------END INCLUDED TEXT--------------------
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