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Security Bulletin: Vulnerability CVE-2019-3880 in Samba affects IBM i

Security Bulletin


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

This security bulletin has been updated, on June 21, 2019, as an additional IBM i PTF is available for IBM i 7.4.

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 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, 7.3, and 7.4 of IBM i are affected.


The issue can be fixed by applying a PTF to IBM i.
Releases 7.2, 7.3, and 7.4 of IBM i are supported and will be fixed.
The IBM i PTF numbers are:

Release 7.2 – SI69591
Release 7.3 – SI69592
Release 7.4 – SI69593

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


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Change History

12 April 2019: Original Document Published
21 June 2019: Updated to include IBM i 7.4 release information

*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.

Document Location


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Document Information

Modified date:
21 June 2019