CVE-2018-19961 — Incomplete Cleanup in XEN

CWE-459 — Incomplete CleanupCWE-212 — Improper Removal of Sensitive Information Before Storage or Transfer7 documents7 sources
Severity
7.8HIGHNVD
EPSS
0.2%
top 60.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
XENCitrix XenserverDebian Linux
Timeline
PublishedDec 8
Latest updateMay 13

Description

An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because TLB flushes do not always occur after IOMMU mapping changes.

CVSS vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 1.1 | Impact: 6.0

Affected Packages3 packages

▶Debianxen/xen< 4.11.1-1+3
▶NVDxen/xen4.11.1
▶NVDcitrix/xenserver4 versions+3

Also affects: Debian Linux 9.0

Patches

Patch: xenbits.xen.org ↗Patch: xenbits.xen.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-qwxp-946x-p86v: An issue was discovered in Xen through 4↗2022-05-13
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CVEList
CVE-2018-19961: An issue was discovered in Xen through 4↗2018-12-08
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OSV
CVE-2018-19961: An issue was discovered in Xen through 4↗2018-12-08
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📋Vendor Advisories

2
Red Hat
xen: insufficient TLB flushing / improper large page mappings with AMD IOMMUs↗2018-11-20
▶
Debian
CVE-2018-19961: xen - An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly all...↗2018
▶

💬Community

1
Bugzilla
CVE-2018-19961 CVE-2018-19962 xen: insufficient TLB flushing / improper large page mappings with AMD IOMMUs↗2018-11-07
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CVE-2018-19961 — Incomplete Cleanup in XEN | cvebase