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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.0567 IBM Security Bulletin: BigFix deployments with internet-facing relays that are not configured as authenticating are prone to security threats (CVE-2019-4061) 25 February 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM BigFix Platform Publisher: IBM Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-4061 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=ibm10870242 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: BigFix deployments with internet-facing relays that are not configured as authenticating are prone to security threats (CVE-2019-4061) Document information More support for: IBM BigFix Platform Component: Not Applicable Software version: 9.2, 9.5 Operating system(s): Platform Independent Reference #: 0870242 Modified date: 18 February 2019 Summary Internet-facing relays, if any, in a BigFix deployment might be configured as non-authenticating, which exposes the deployment to security risks. Security attacks in this context might mean unauthorized access to the relays and any content or actions, and download packages associated with them or to the Relay Diagnostics page that might contain sensitive information (for example: software, vulnerability information, and passwords). Vulnerability Details CVEID: CVE-2019-4061 DESCRIPTION: IBM BigFix Platform could allow an attacker to query the relay remotely and gather information about the updates and fixlets deployed to the associated sites due to not enabling authenticated access. CVSS Base Score: 5.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 156869 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) Affected Products and Versions +------------------------------+-----------------+ | Affected IBM BigFix Platform |Affected Versions| +------------------------------+-----------------+ |BigFix Platform | 9.5 - 9.5.11 | +------------------------------+-----------------+ |BigFix Platform | 9.2 - 9.2.16 | +------------------------------+-----------------+ Remediation/Fixes Note: The following procedure applies to both 9.2.x and 9.5.x. To remediate the security vulnerability, configure the internet-facing relays in your BigFix deployment as "authenticating". When a relay is configured as authenticating, only the BigFix clients in your environment can connect to it and all the communication between them happens through TLS (HTTPS). This configuration also prevents any unauthorized access to the Relay Diagnostics page. To enable the relays in your environment for authentication, do the following steps: 1. On the BES Support website, find the BES Client Settings: Enable Relay authentication fixlet. 2. Run the fixlet and wait for the action to finish. For more details, see Authenticating Relays . CVE-to-Component Breakdown +----------------------------+------------------------------+ | CVEs |Affected Components | +----------------------------+------------------------------+ | CVE-2019-4061 |Internet-facing relays, if | | |any. | +----------------------------+------------------------------+ Workarounds and Mitigations Using firewall rules to restrict access to a specific IP range or VPN-based connection management can limit the exposure. Note that a skilled attacker may still be able to overcome these restrictions through spoofing or gaining access to other machines on the trusted network. Change History 2019-02-12: Added CVE/CVSS details, added mitigation steps. 2019-02-04: Original version 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. - --------------------------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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXHOOHWaOgq3Tt24GAQgH2A//fOsEvQywUm/EtDKPsujPKOcbntZVYQG+ SfljE6rchmh5UjXP5GBzo7WwI5x2lA4KxR9U3Ic2LbFfMX2pZ/fAcbadyJkWEBaq XMnMFB+/VISFUvJYKwwHqOHwsrgT0GsdW4PPrRubRikgAG//XDUTNoImclkbKZtW KCKLfiDnBEqD+2zd+pX2mKYF7Zhie6n/thvRnI4WHjfZhm8ay0TVk0ES6XPc7Bgp Kn+0UzkOXjgUAKSIgTrB6/+f4k0FxKHu7t/0XjblTkx0R8GbHejv0RprPxf3nGQP jwSnVEbP25HgZI3mba+1LHD/XVQ0jYfVXyBsAyS3lvBKLDb8CE41f7hx4sP5F81a v4RA9j4mF1GcxEjIhVw+/zFo0Ohfda9LqYtHuUPSHjesn7u5llf7aZN+7OqjM41l cb2RMQLTCtoUOXlfsyDVH4+Yb5HlFzwM3EWaGnAtJw052ToBMPq9bH5neaMqxgTU zzP5QwYYAq/MakTGWZdbZ2WK939RTlFjRypSX2GsYtaQ9HDUMVUrKn9mrOzH6n31 WaI1NqbaD7K3oZtxDQZqxVIU4aDAnfr6/q+JUuVayb/xpNtMUOV+k9oWRDU0oFO+ NtnJyJZ5wxhqDWpztBi+t87sJhlClra2zy3ezsgEBAkYkU1O9v3NvVwZ38jfrR+D Bj1LYFQyf24= =GNQJ -----END PGP SIGNATURE-----