Vulnerability in Citrix Xenserver
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 mapping changes.
EPSS: 0.004 (33.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Citrix Xenserver — versions 7.0, 7.1, 7.5
- Xen
- Debian Debian_linux — versions 9.0
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (Patch, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (vendor-advisory, x_refsource_SUSE)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2018-19961?
- CVE-2018-19961 is a high-severity vulnerability in Citrix Xenserver, classified under Incomplete Cleanup. CVSS score: 7.8/10. Published 2018-12-08.
- How severe is CVE-2018-19961?
- High severity. CVSS v3 base score is 7.8 out of 10.