Home/CVE/An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privil
CVE

CVE-2019-17346

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privil

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because of an incompatibility between Process Context Identifiers (PCID) and TLB flushes.

HIGH · CVSS 8.8 EPSS 0.0018
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

2
xen<= 4.11.2
debian linuxall versions
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Oct 2019 · 01:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

5
suse-csafSUSE-SU-2019:2783-1
suse-csafsuse-ru-2019_2767-1
suse-csafSUSE-SU-2019:14199-1
suse-csafSUSE-SU-2019:2769-1
suse-csafSUSE-SU-2019:2753-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2019/10/25/5Mailing List
http://xenbits.xen.org/xsa/advisory-292.htmlPatchVendor Advisory
https://seclists.org/bugtraq/2020/Jan/21Mailing ListThird Party Advisory
https://www.debian.org/security/2020/dsa-4602Third Party Advisory
https://xenbits.xen.org/xsa/advisory-292.htmlVendor Advisory
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