Vulnerability in Xen
CVE-2017-8903
Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213.
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: 0.005 (39.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Xen — versions 4.8.0, 4.8.1
Public proof-of-concept exploits
References
- security.gentoo.org/glsa/201705-11 (vendor-advisory)
- www.securitytracker.com/id/1038386 (vdb-entry)
- xenbits.xen.org/xsa/advisory-213.html (Patch, Mitigation, Vendor Advisory)
- www.securityfocus.com/bid/98426 (vdb-entry)
- blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2017-8903?
- CVE-2017-8903 is a high-severity vulnerability in Xen. CVSS score: 8.8/10. Published 2017-05-11.
- How severe is CVE-2017-8903?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-8903 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.