PT-2019-4893 · Xen+1 · Xen+1

Andrew Cooper + 1 · Published 2019-07-10 · Updated 2023-02-03 · CVE-2019-17346

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.12

Description The issue is related to an incompatibility between Process Context Identifiers (PCID) and TLB flushes, allowing x86 PV guest OS users to cause a denial of service or gain privileges. This is due to insufficient input validation in the Xen hypervisor.

Recommendations For Xen versions prior to 4.12, update to version 4.12 or later to resolve the issue. At the moment, there is no information about other versions that contain a fix for this vulnerability.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-01485

CVE-2019-17346

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 · 70

• http://xenbits.xen.org/xsa/advisory-292.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-17346 · Vendor Advisory
• 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://bdu.fstec.ru/vul/2020-01485 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2019-17346 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-17346 · Vendor Advisory
• https://xenbits.xen.org/xsa/advisory-292.html · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:14199-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-17346 · Security Note
• 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
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-17346 · Vendor Advisory