Vulnerability in Xen
CVE-2017-14319
A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
References
- www.securitytracker.com/id/1039351 (VDB Entry, Third Party Advisory, vdb-entry)
- support.citrix.com/article/CTX227185
- www.debian.org/security/2017/dsa-4050 (vendor-advisory)
- www.securityfocus.com/bid/100819 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.debian.org/debian-lts-announce/2018/10/msg00009.html (mailing-list)
- xenbits.xen.org/xsa/advisory-234.html (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-14319?
- CVE-2017-14319 is a high-severity vulnerability in Xen. CVSS score: 8.8/10. Published 2017-09-12.
- How severe is CVE-2017-14319?
- High severity. CVSS v3 base score is 8.8 out of 10.