Vulnerability in Xen
CVE-2016-2271
VMX in Xen 4.6.x and earlier, when using an Intel or Cyrix CPU, allows local HVM guest users to cause a denial of service (guest crash) via vectors related to a non-canonical RIP.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.6% 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
- Xen — versions 4.6.0, 4.6.1
Public proof-of-concept exploits
References
- www.debian.org/security/2016/dsa-3519 (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2016-February/177990.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2016-March/178518.html (vendor-advisory)
- www.securitytracker.com/id/1035043 (vdb-entry)
- xenbits.xen.org/xsa/advisory-170.html (Patch, Vendor Advisory)
- support.citrix.com/article/CTX209443
- security.gentoo.org/glsa/201604-03 (vendor-advisory)
Frequently asked questions
- What is CVE-2016-2271?
- CVE-2016-2271 is a medium-severity vulnerability in Xen. CVSS score: 5.5/10. Published 2016-02-19.
- How severe is CVE-2016-2271?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2016-2271 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.