PT-2019-5144 · Xen+1 · Xen+1

Jan Beulich · Published 2019-10-07 · Updated 2023-02-03 · CVE-2019-17348

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.11.x

Description The issue is related to an incompatibility between Process Context Identifiers (PCID) and shadow-pagetable switching, allowing x86 PV guest OS users to cause a denial of service. This is due to a lack of input validation mechanism in the Xen hypervisor.

Recommendations For Xen versions prior to 4.11.x, update to a version that addresses the incompatibility between PCID and shadow-pagetable switching to prevent denial of service attacks.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-01811

CVE-2019-17348

DSA-4602-1

SUSE-RU-2019:2767-1

SUSE-SU-2019:14199-1

SUSE-SU-2019:2753-1

SUSE-SU-2019:2769-1

SUSE-SU-2019:2783-1

SUSE-SU-2019_14199-1

Affected Products

Suse

Xen

References · 71

• https://bdu.fstec.ru/vul/2020-01811 · Security Note
• https://osv.dev/vulnerability/SUSE-RU-2019:2767-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20200327SE16 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:2753-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-17348 · Security Note
• https://xenbits.xen.org/xsa/advisory-294.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-17348 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:2783-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:14199-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-17348 · Vendor Advisory
• https://debian.org/security/2020/dsa-4602 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4602-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:2769-1 · Vendor Advisory
• http://xenbits.xen.org/xsa/advisory-294.html · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-17348 · Vendor Advisory