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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4321 Security Bulletin: IBM OS Images for RedHat Enterprise System is vulnerable to Intel Microarchitectural Data Sampling (MDS) Vulnerabilites (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091) 15 November 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM OS Images for RedHat Enterprise System Publisher: IBM Operating System: Linux variants Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-11091 CVE-2018-12130 CVE-2018-12127 CVE-2018-12126 Reference: ASB-2019.0138 ESB-2019.4282 ESB-2019.4280 ESB-2019.4101 ESB-2019.3590 Original Bulletin: https://www.ibm.com/support/pages/node/1107009 - --------------------------BEGIN INCLUDED TEXT-------------------- IBM OS Images for RedHat Enterprise System is vulnerable to Intel Microarchitectural Data Sampling (MDS) Vulnerabilites (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091) Security Bulletin Summary Intel Microarchitectural Data Sampling (MDS) vulnerabilities identified in RedHat Linux used in OS Images for RedHat Enterprise System for Cloud Pak System formerly known as PureApplication System. Vulnerability Details CVEID: CVE-2019-11091 DESCRIPTION: Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/ corporate-information/SA00233-microcode-update-guidance_05132019.pdf CVSS Base score: 3.8 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 160993 for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N) CVEID: CVE-2018-12130 DESCRIPTION: Microarchitectural Fill Buffer Data Sampling (MFBDS): Fill buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/ corporate-information/SA00233-microcode-update-guidance_05132019.pdf CVSS Base score: 6.5 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 160992 for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) CVEID: CVE-2018-12127 DESCRIPTION: Microarchitectural Load Port Data Sampling (MLPDS): Load ports on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/ content/dam/www/public/us/en/documents/corporate-information/ SA00233-microcode-update-guidance_05132019.pdf CVSS Base score: 6.5 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 160991 for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) CVEID: CVE-2018-12126 DESCRIPTION: Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/ corporate-information/SA00233-microcode-update-guidance_05132019.pdf CVSS Base score: 6.5 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 160990 for the current score. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N) Affected Products and Versions +--------------------------------------+----------+ |Affected Product(s) |Version(s)| +--------------------------------------+----------+ |IBM OS Image for Red Hat Linux Systems|3.0.0.0 | +--------------------------------------+----------+ +--------------------------------------+----------+ +--------------------------------------+----------+ Remediation/Fixes For OS Image for RedHat Enterprise System deployed on IBM Cloud Pak System V2.2.5.0-V2.2.5.3, update OS Image by using "yum kernel update". Recommendation is to apply fix in test stage environment prior to production. For unsupported version/release/platformIBM recommends upgrading to a fixed, supported version of the product. Contact IBM Cloud Pak System support for assistance. For OS Image for RedHat Enterprise System deployed on IBM Cloud Pak System V2.3.0, upgrade to V2.3.0.1. Information on upgrading can be found here: http://www.ibm.com/support/ docview.wssuid=ibm10887959. Workarounds and Mitigations For OS Image for RedHat Enterprise System deployed on IBM Cloud Pak System V2.2.5.0-V2.2.5.3, update OS Image by using "yum kernel update". Recommendation is to apply fix in test stage environment prior to production. For unsupported version/release/platformIBM recommends upgrading to a fixed, supported version of the product. Contact IBM Cloud Pak System support for assistance. For OS Image for RedHat Enterprise System deployed on IBM Cloud Pak System V2.3.0, upgrade to V2.3.0.1. Information on upgrading can be found here: http://www.ibm.com/support/ docview.wssuid=ibm10887959. Get Notified about Future Security Bulletins References - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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 iQIVAwUBXc4dQ2aOgq3Tt24GAQjAHw/+NDKI+KskIyNj9F4AtdGDENEdBuBinMDP zrouFzdjsKxDxhXf3D9S/VHU1snQzx7qLF2a8qrzZnaot+zOr+zf8dlg4IFc2kRk 7/MMxsEnhlD7WK/sVuxVqiFZYOI7XQYkrwz+ms9GeD1l7789h1Keu7RrsLGVtfRX WCKEHgP2Mq9Ce82h/KXTclmA28xU92327+HyNXxGmJBwSPRARC0vlsnF/BkNDBiU mt5/G0qJ4t4oC3+YawRFLmNaS6fB6MtRe87vhJFhwWAcxD1mSuVmCc+wg8l+k3gd PAi7pokbfD/ifBKOoNSSANoIq80ILglOuTmVtDGkxWeHJShf6Tqu7HitPX6OPThL lW3+x8kwdhwF7R7sQST3T9ZpEWeV19zcf4IK6HlAxk0bDvWDsspe98bkefmOTngH /tAw6dh3n5fe8CEyCAWx3ii/iAXK69D51eMFV/g1oHhmaG3WCVuc0WsNDgouMrOM v7OOBduD7CrFnYmFuv6Kbul+nqA01tM86SkWnfgJ0xvws+P0OC/Aoc//tuMHAk2C 51s871ccDekIpdXNotadmadMLZfVwh2vGdUJpDkeDjZSf8fecjPnYSOPgUfr0t0R t+a2oKMk3U7WFmbTFGQ5oBh3NedwNtrVhQKr5Zphq4q4Z15zPI41P9/ExaDOGnEx LUR3WxHjr/k= =8Qws -----END PGP SIGNATURE-----