CVE-2018-19963 — Reachable Assertion in XEN

CWE-617 — Reachable AssertionCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer7 documents6 sources
Severity
7.8HIGHNVD
EPSS
0.1%
top 84.29%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENDebian XEN
Timeline
PublishedDec 8
Latest updateMay 13

Description

An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.

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

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

Patches

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

🔴Vulnerability Details

2
GHSA
GHSA-fxvq-f6w2-c6gp: An issue was discovered in Xen 4↗2022-05-13
▶
OSV
CVE-2018-19963: An issue was discovered in Xen 4↗2018-12-08
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📋Vendor Advisories

2
Red Hat
xen: resource accounting issues in x86 IOREQ server handling (XSA-276)↗2018-11-20
▶
Debian
CVE-2018-19963: xen - An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denia...↗2018
▶

💬Community

2
Bugzilla
CVE-2018-19963 CVE-2018-19964 CVE-2018-19966 xen: various flaws [fedora-all]↗2018-11-21
▶
Bugzilla
CVE-2018-19963 xsa276 xen: resource accounting issues in x86 IOREQ server handling (XSA-276)↗2018-11-21
▶