CVE-2018-19966 — Allocation of Resources Without Limits or Throttling in XEN

CWE-770 — Allocation of Resources Without Limits or ThrottlingCWE-436 — Interpretation Conflict7 documents6 sources
Severity
8.8HIGHNVD
EPSS
0.1%
top 68.49%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
XENDebian XENDebian Linux
Timeline
PublishedDec 8
Latest updateMay 13

Description

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 2.0 | Impact: 6.0

Affected Packages3 packages

▶debiandebian/xen< xen 4.11.1-1 (bookworm)
▶Debianxen/xen< 4.11.1-1+3
▶NVDxen/xen4.11.0 — 4.11.1

Also affects: Debian Linux 9.0

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-3635-87f7-gfgj: An issue was discovered in Xen through 4↗2022-05-13
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OSV
CVE-2018-19966: An issue was discovered in Xen through 4↗2018-12-08
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📋Vendor Advisories

2
Red Hat
xen: Conflicts with shadow paging due to XSA-240 incomplete fix (XSA-280)↗2018-11-20
▶
Debian
CVE-2018-19966: xen - An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to ...↗2018
▶

💬Community

2
Bugzilla
CVE-2018-19966 xsa280 xen: Conflicts with shadow paging due to XSA-240 incomplete fix (XSA-280)↗2018-11-21
▶
Bugzilla
CVE-2018-19963 CVE-2018-19964 CVE-2018-19966 xen: various flaws [fedora-all]↗2018-11-21
▶