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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
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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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