High severity · published Dec 8, 2018
CVE-2018-19961
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…
7.8
CVSS
0.4%
EPSS
No
On KEV
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:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
XE
Xen · Xen
through 4.11.1 · source: NVD
XE
Xenserver · Citrix
7.0; 7.1; 7.5; 7.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-19961
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-19961
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
Third Party Advisory
http://www.securityfocus.com/bid/106182
lists.debian.org
https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
Third Party Advisory
https://support.citrix.com/article/CTX239432
Third Party Advisory
https://www.debian.org/security/2019/dsa-4369
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