Vulnerability in Intel Microarchitectural Data Sampling Uncacheable Memory
CVE-2019-11091
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
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Intel Microarchitectural Data Sampling Uncacheable Memory
- Intel Microarchitectural Data Sampling Uncacheable Memory Firmware
- Intel Corporation Central Processing Units (Cpus) — versions 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
- Fedoraproject Fedora — versions 29
Public proof-of-concept exploits
References
- www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00233.html (Vendor Advisory)
- www.synology.com/security/advisory/Synology_SA_19_24
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00014.html (vendor-advisory)
- access.redhat.com/errata/RHSA-2019:1455 (vendor-advisory)
- usn.ubuntu.com/3977-3/ (vendor-advisory)
- lists.debian.org/debian-lts-announce/2019/06/msg00018.html (mailing-list)
- seclists.org/bugtraq/2019/Jun/28 (mailing-list)
- seclists.org/bugtraq/2019/Jun/36 (mailing-list)
- www.arubanetworks.com/assets/alert/ARUBA-PSA-2019-003.txt
Frequently asked questions
- What is CVE-2019-11091?
- CVE-2019-11091 is a medium-severity vulnerability in Intel Microarchitectural Data Sampling Uncacheable Memory. CVSS score: 5.6/10. Published 2019-05-30.
- How severe is CVE-2019-11091?
- Medium severity. CVSS v3 base score is 5.6 out of 10.
- Is CVE-2019-11091 known to be exploited?
- 21 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.