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

5.6
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.73% Top 20%
Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory freebsd.org Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory intel.com
Affected: Intel Corporation Central Processing Units (CPUs)
Published at:
Updated at:

References

Link Tags
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00233.html vendor advisory
https://www.synology.com/security/advisory/Synology_SA_19_24
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OH73SGTJ575OBCPSJFX6LX7KP2KZIEN4/ vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00014.html vendor advisory
https://access.redhat.com/errata/RHSA-2019:1455 vendor advisory
https://usn.ubuntu.com/3977-3/ vendor advisory
https://lists.debian.org/debian-lts-announce/2019/06/msg00018.html mailing list
https://seclists.org/bugtraq/2019/Jun/28 mailing list
https://seclists.org/bugtraq/2019/Jun/36 mailing list
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2019-003.txt
https://cert-portal.siemens.com/productcert/pdf/ssa-616472.pdf
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190712-01-mds-en
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00053.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00052.html vendor advisory
https://www.freebsd.org/security/advisories/FreeBSD-SA-19:07.mds.asc vendor advisory
https://access.redhat.com/errata/RHSA-2019:2553 vendor advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10292
https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
https://seclists.org/bugtraq/2019/Nov/15 mailing list
https://www.debian.org/security/2020/dsa-4602 vendor advisory
https://seclists.org/bugtraq/2020/Jan/21 mailing list
https://security.gentoo.org/glsa/202003-56 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11091?
CVE-2019-11091 has been scored as a medium severity vulnerability.
How to fix CVE-2019-11091?
To fix CVE-2019-11091, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-11091 being actively exploited in the wild?
It is possible that CVE-2019-11091 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11091?
CVE-2019-11091 affects Intel Corporation Central Processing Units (CPUs).
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