CVE-2019-11091 — Sensitive Information Exposure in Intel-microcode

CWE-200 — Sensitive Information ExposureCWE-515 — Covert Storage Channel47 documents15 sources
Severity
5.6MEDIUMNVD
EPSS
1.7%
top 17.69%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
12
Linux KernelXENQemu+9 more
Timeline
PublishedMay 30
Latest updateMay 24

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 vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:NExploitability: 1.1 | Impact: 4.0

Affected Packages12 packages

▶debiandebian/intel-microcode< intel-microcode 3.20190514.1 (bookworm)
▶CVEListV5intel_corporation/central_processing_unitsA 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
▶debiandebian/xen< intel-microcode 3.20190514.1 (bookworm)
▶debiandebian/linux< intel-microcode 3.20190514.1 (bookworm)

Also affects: Fedora 29

🔴Vulnerability Details

15
GHSA
GHSA-25x5-mfj4-w63g: Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an a↗2022-05-24
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OSV
intel-microcode update↗2019-06-20
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OSV
CVE-2019-11091: Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an a↗2019-05-30
▶
OSV
intel-microcode update↗2019-05-22
▶
OSV
linux-hwe, linux-azure, linux-gcp, linux-oracle vulnerabilities↗2019-05-15
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📋Vendor Advisories

21
Ubuntu
Intel Microcode update↗2019-06-20
▶
Palo Alto
PAN-SA-2019-0012 Information about Recent Intel Side Channel Vulnerabilities↗2019-05-29
▶
Ubuntu
Intel Microcode update↗2019-05-22
▶
Ubuntu
libvirt update↗2019-05-16
▶
Ubuntu
libvirt update↗2019-05-15
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🕵️Threat Intelligence

4
Tenable
Objects in Mirror Are Closer Than They Appear: Reflecting on the Cybersecurity Threats from 2019↗2019-12-16
▶
Tenable
Microarchitectural Data Sampling: Speculative Execution Side-Channel Vulnerabilities Found in Intel CPUs↗2019-05-15
▶
Qualys
May 2019 Patch Tuesday - 79 Vulns, 22 Critical, RDP RCE, MDS Attacks, Adobe Vulns | Qualys↗2019-05-14
▶
Qualys
May 2019 Patch Tuesday – 79 Vulns, 22 Critical, RDP RCE, MDS Attacks, Adobe Vulns↗2019-05-14
▶

📄Research Papers

1
arXiv
ZombieLoad: Cross-Privilege-Boundary Data Sampling↗2019-05-14
▶

💬Community

4
Bugzilla
CVE-2019-11091 qemu: hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) [fedora-all]↗2019-05-14
▶
Bugzilla
CVE-2019-11091 libvirt: hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) [fedora-all]↗2019-05-14
▶
Bugzilla
CVE-2019-11091 kernel: hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) [fedora-all]↗2019-05-14
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Bugzilla
CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)↗2019-05-02
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