CVE-2018-19962: Infoleak
First published: Sat Dec 08 2018(Updated: )
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 small IOMMU mappings are unsafely combined into larger ones.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xen | 4.11.4+107-gef32c7afa2-1 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1 | |
| Xen Xen | <=4.11.1 | |
| Debian Debian Linux | =9.0 | |
| Citrix XenServer | =7.0 | |
| Citrix XenServer | =7.1-cu1 | |
| Citrix XenServer | =7.5 | |
| Citrix XenServer | =7.6 |
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Reference Links
- https://xenbits.xen.org/xsa/advisory-275.txt
- https://security-tracker.debian.org/tracker/CVE-2018-19962
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182
- https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
- https://support.citrix.com/article/CTX239432
- https://www.debian.org/security/2019/dsa-4369
- https://xenbits.xen.org/xsa/advisory-275.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
Frequently Asked Questions
What is CVE-2018-19962?
CVE-2018-19962 is a vulnerability in Xen that allows guest OS users to gain host OS privileges.
What is the severity of CVE-2018-19962?
The severity of CVE-2018-19962 is high with a CVSS score of 7.8.
Which platforms are affected by CVE-2018-19962?
AMD x86 platforms running Xen through version 4.11.x are affected by CVE-2018-19962.
How can guest OS users exploit CVE-2018-19962?
Guest OS users can exploit CVE-2018-19962 by combining small IOMMU mappings into larger ones.
How can I fix CVE-2018-19962?
To fix CVE-2018-19962, update Xen to version 4.11.4+107-gef32c7afa2-1 or a later version.
- collector/security-tracker-debian
- collector/nvd-index
- agent/severity
- agent/references
- agent/weakness
- agent/author
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/first-publish-date
- agent/softwarecombine
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/debian
- vendor/xen
- canonical/xen xen
- version/xen xen/4.11.1
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- vendor/citrix
- canonical/citrix xenserver
- version/citrix xenserver/7.0
- version/citrix xenserver/7.1-cu1
- version/citrix xenserver/7.5
- version/citrix xenserver/7.6