CVE-2019-17343 — Improper Locking in XEN

CWE-667 — Improper LockingCWE-362 — Race ConditionCWE-20 — Improper Input Validation6 documents6 sources
Severity
6.8MEDIUMNVD
EPSS
0.1%
top 68.99%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
XENDebian XENDebian Linux
Timeline
PublishedOct 8
Latest updateMay 24

Description

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 by leveraging incorrect use of the HVM physmap concept for PV domains.

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 0.9 | Impact: 5.9

Affected Packages3 packages

▶debiandebian/xen< xen 4.11.1+92-g6c33308a8d-1 (bookworm)
▶Debianxen/xen< 4.11.1+92-g6c33308a8d-1+3
▶NVDxen/xen4.11.2

Also affects: Debian Linux 10.0, 9.0

🔴Vulnerability Details

2
GHSA
GHSA-4q76-cfmr-jqcp: An issue was discovered in Xen through 4↗2022-05-24
▶
OSV
CVE-2019-17343: An issue was discovered in Xen through 4↗2019-10-08
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📋Vendor Advisories

2
Red Hat
xen: xsa288: Inconsistent PV IOMMU discipline↗2019-03-05
▶
Debian
CVE-2019-17343: xen - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to ...↗2019
▶

💬Community

1
Bugzilla
CVE-2019-17343 xen: xsa288: Inconsistent PV IOMMU discipline↗2019-02-20
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