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AUSCERT External Security Bulletin Redistribution
ESB-2019.1996
A vulnerability in Samba affects IBM Spectrum Scale SMB
protocol access method (CVE-2019-3880)
4 June 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Spectrum Scale
Publisher: IBM
Operating System: Linux variants
Impact/Access: Create Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-3880
Reference: ESB-2019.1803
ESB-2019.1658
ESB-2019.1625
ESB-2019.1546
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=ibm10884654
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A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method
(CVE-2019-3880)
Product: IBM Spectrum Scale
Component: Not Applicable
Software version: All Versions
Operating system(s): Linux
Reference #: 0884654
Security Bulletin
Summary
A Samba vulnerability affects IBM Spectrum Scale SMB protocol access method
that could allow a remote authenticated attacker to traverse a symbolic link on
the system and write files outside the SMB share.
Vulnerability Details
This vulnerability only affectssystems having SMB1 and Unix-Extensions enabled.
By default in Spectrum Scale these are not enabled and supported.
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
IBM Spectrum Scale V5.0.0.0 thru V5.0.3.0
IBM Spectrum Scale V4.2.0.0 thru V4.2.3.14
IBM Spectrum Scale V4.1.0.0 thru V4.1.1.22
Remediation/Fixes
For IBM Spectrum Scale V5.0.0.0 thru V5.0.3.0, apply V5.0.3.1 available from
FixCentral at
https://www-945.ibm.com/support/fixcentral/swg/selectFixesparent=
Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&
release=5.0.2&platform=All&function=all
For IBM Spectrum Scale V4.2.0.0 thru V4.2.3.14, apply V4.2.3.15 available from
FixCentral at
https://www-945.ibm.com/support/fixcentral/swg/selectFixesparent=
Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&
release=4.2.3&platform=All&function=all
For IBM Spectrum Scale V4.1.0.0 (GPFS) thru V4.1.1.22, apply V4.1.1.23
available from FixCentral at
https://www-945.ibm.com/support/fixcentral/swg/selectFixesparent=
Software%2Bdefined%2Bstorage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&
release=4.1.1&platform=All&function=all
If you cannot apply the latest level of service, contact IBM Service for an
efix
o IBM Specrum Scale V5.0.0.0 thru V5.0.3.0, reference APAR IJ16214
o IBM Spectrum Scale 4.2.0.0 thru 4.2.3.14, reference APAR IJ16213
To contact IBM Service, see http://www.ibm.com/planetwide/
Workarounds and Mitigations
None
Change History
3 June 2019 : Original version published
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