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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1538 Vulnerability in Open Source Samba affects IBM Netezza Host Management 3 May 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Netezza Host Management Publisher: IBM Operating System: Linux variants Windows Virtualisation 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-2019.1176 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=ibm10882842 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability in Open Source Samba affects IBM Netezza Host Management Product: PureData System for Analytics Software version: All Versions Operating system(s): Platform Independent Reference #: 0882842 Security Bulletin Summary Open Source Samba is used by IBM Netezza Host Mangement. IBM Netezza Host Management has provided mitigation for 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 o IBM Netezza Host Management 5.2.1.0 - 5.4.24.0 Remediation/Fixes None Workarounds and Mitigations Mitigation of the reported CVE CVE-2019-3880 on following platforms : PureData System for Analytics N1001 IBM Netezza High Capacity Appliance C1000 IBM Netezza 1000 IBM Netezza 100 PureData System for Analytics N200x and N3001 Execute below steps using "root" user on both ha1/ha2 hosts Step 1. Check if Samba module is installed in the host [host]# rpm -qa | grep samba Step 2. Check if Samba service is running [host]# /etc/init.d/smb status Step 3. If Samba service is running, stop the smb service [host]# /etc/init.d/smb stop Step 4. Backup the /etc/samba/smb.conf file [host]# cp /etc/samba/smb.conf /etc/samba/smb.conf_backup Step 5. Edit the /etc/samba/smb.conf and setparameter as below: Either turn off SMB1 by setting the global parameter: #============ Global Settings ========== [global] min protocol = SMB2 OR, if SMB1 is required turn off unix extensions by setting the global parameter: [global] unix extensions = no Step 6. Start the smb services using below command: [host]# /etc/init.d/smb start Note : If samba configuration file smb.conf is changed/modified in future, please verify if above settings is changed. If changed please make sure to mitigate this issue by following steps 2 to 6. Change History 02 May 2019: Original version published - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. 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Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXMvC82aOgq3Tt24GAQgYEQ/+KCjcfr7doAhUTcsG7a5SAdKQDGJKogEN pqSakg2ERr5PdgBOY9egmoUsYGg2JwwFtmyYNF7Xh7LMaJHt3xv6v2kBOiHjgSew kheXkaWrslrqmpwyRby+I+rq+nS4VBavNDA6THcKxuTUr1mr7VGQoRRMG2GY6RAK NUWalurw5AMANQpMdMqU/CDMeiN0LttCppjcdyWMuRufhi/UNwdt0KZagNPkfVPD KbHAewIADbxeiWOZ9TrNv54U3ddceCh5sssit/+mcXNhCu65jX66gygk3xuqBQZ8 abEluuU6AWzLQYuoWK8POCBNRCq72xKBUWqWUL0FU9i2R7OjDeeUz2Xrmhfoj9m9 3jaaGby2d/0hP2LeH05/5CDYyVHNFtSeu8k8kdH6doxMwfYhXbU5wxmXCkaC7prI NLDB10P3OrN9TbPm7sZxenRvm2k4pZl8XXYfUXOpUYj+TZIpxLFp2b2SvShkkOlq Gkjhg2Kt7LpYzsX0AbHoimvQYzVfSQcpP+QPV4Kbp6gXcNe0dl+p3bxs7TUiw6vi BptHYRCWGAv29VEw7lHeWqc6uknqpoUmBt6eY2cZMAchwIuUrhy260sfcMZ2Cbnc W3peDR+AG1SNriLYwBX5ZbPkRZ7plOGQ99/cOXooormUl/5u4du2DQZubHNGb/h+ 6Zo3g3mHA88= =RwiR -----END PGP SIGNATURE-----