ESB-2019.1278 - [IBM i] IBM i: Multiple vulnerabilities 2019-04-15

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1278
 IBM Security Bulletin: Vulnerability CVE-2019-3880 in Samba affects IBM i
                               15 April 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM i
Publisher:         IBM
Operating System:  IBM i
Impact/Access:     Create Arbitrary Files   -- Existing Account
                   Access Confidential Data -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3880  

Reference:         ESB-2019.1218
                   ESB-2019.1178
                   ESB-2019.1176

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10880621

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Vulnerability CVE-2019-3880 in Samba affects IBM i

Product:             IBM i

Software version:    7.2, 7.3

Operating system(s): IBM i

Reference #:         0880621

Security Bulletin

Summary

Samba is supported on IBM i. IBM i has addressed the applicable CVE.

Vulnerability Details

CVEID: CVE-2019-3880
DESCRIPTION: Samba could allow a remote authenticated attacker to traverse
directories on the system. An attacker could send a specially-crafted
"winreg_SaveKey" request to create a new registry hive file outside a Samba
share.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
159188 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

Releases 7.2 and 7.3 of IBM i are affected.

Remediation/Fixes

The issue can be fixed by applying a PTF to IBM i.
Releases 7.2 and 7.3 of IBM i are supported and will be fixed.

The IBM i PTF numbers are:

Release 7.2 - SI69591
Release 7.3 - SI69592

https://www-945.ibm.com/support/fixcentral/

Important note: IBM recommends that all users running unsupported versions of
affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

12 April 2019: 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

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.

        Cross reference information
 Product  Component Platform Version Edition
IBM i 7.2           IBM i    7.2
IBM i 7.3           IBM i    7.3

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