PT-2020-16759 · Citrix+1 · Xen+1

Jan Beulich + 1 · Published 2020-10-22 · Updated 2024-06-15 · CVE-2020-27670

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Xen versions through 4.14.x

Description An issue allows x86 guest OS users to cause a denial of service, data corruption, or a data leak, and possibly gain privileges. This occurs because an AMD IOMMU page-table entry can be half-updated.

Recommendations For versions through 4.14.x, consider restricting access to the AMD IOMMU to minimize the risk of exploitation until a patch is available.

Fix

DoS

Insufficient Verification of Data Authenticity

Weakness Enumeration

CWE-345

Related Identifiers

CVE-2020-27670

DSA-4804-1

OPENSUSE-SU-2020:1783-1

OPENSUSE-SU-2020:1844-1

OPENSUSE-SU-2020:2162-1

OPENSUSE-SU-2020:2192-1

OPENSUSE-SU-2020_1783-1

OPENSUSE-SU-2020_1844-1

OPENSUSE-SU-2020_2162-1

OPENSUSE-SU-2020_2192-1

OPENSUSE-SU-2024:11520-1

SUSE-SU-2020:14557-1

SUSE-SU-2020:3049-1

SUSE-SU-2020:3050-1

SUSE-SU-2020:3051-1

SUSE-SU-2020:3052-1

SUSE-SU-2020:3088-1

SUSE-SU-2020:3611-1

SUSE-SU-2020:3615-1

SUSE-SU-2020:3627-1

SUSE-SU-2020:3631-1

SUSE-SU-2020:3653-1

SUSE-SU-2020:3742-1

SUSE-SU-2020_14557-1

SUSE-SU-2020_3049-1

SUSE-SU-2020_3050-1

SUSE-SU-2020_3051-1

SUSE-SU-2020_3052-1

SUSE-SU-2020_3088-1

SUSE-SU-2020_3611-1

SUSE-SU-2020_3615-1

SUSE-SU-2020_3627-1

SUSE-SU-2020_3631-1

SUSE-SU-2020_3653-1

SUSE-SU-2020_3742-1

Affected Products

Suse

Xen

References · 155

• https://osv.dev/vulnerability/openSUSE-SU-2024:11520-1 · Vendor Advisory
• https://security.gentoo.org/glsa/202011-06 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3653-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:2192-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27670 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2020:14557-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3627-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3742-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2020:1844-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4804-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3088-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3631-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:3615-1 · Vendor Advisory