HIGH
xen: x86: 64bit PV guest breakout via pagetable use-after-mode-change (XSA-213)
Published May 11, 2017
8.8
HIGHCVSS 3.0
EPSS 0.49%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.8 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
8.5 HIGH Red Hat
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
7.2 HIGH NVD
AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.49% 0.00490
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.00490
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.49% (0.00490) | 39.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00490) | 38.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00062) | 16.57th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00074) | 34.15th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.07% (0.00074) | 32.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.07% (0.00074) | 30.14th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.40% (0.01404) | 72.03th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.40% (0.01404) | 71.98th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.40% (0.01404) | 69.90th | v2 (v2022.01.01) |
| Feb 5, 2022 | 1.40% (0.01404) | 45.82th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.36% (0.01365) | 45.07th | v2 (v2022.01.01) |
| Feb 3, 2022 | 2.18% (0.02177) | 50.59th | v1 |
| Jan 6, 2022 | 2.18% (0.02177) | 50.09th | v1 |
| Sep 1, 2021 | 2.18% (0.02177) | 77.45th | v1 |
| Apr 14, 2021 | 2.18% (0.02177) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (10)
- http://www.securityfocus.com/bid/98426 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1038386 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-213.html
- https://access.redhat.com/security/cve/CVE-2017-8903 Vendor Advisory
- https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/ x_refsource_CONFIRMVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1443222 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-8903
- https://security.gentoo.org/glsa/201705-11 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-8903
- https://xenbits.xen.org/xsa/advisory-213.html x_refsource_CONFIRMMitigationPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/98426 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1038386 | vdb-entryx_refsource_SECTRACK | |
| http://xenbits.xen.org/xsa/advisory-213.html | ||
| https://access.redhat.com/security/cve/CVE-2017-8903 | Vendor Advisory | |
| https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/ | x_refsource_CONFIRMVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1443222 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-8903 | ||
| https://security.gentoo.org/glsa/201705-11 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-8903 | ||
| https://xenbits.xen.org/xsa/advisory-213.html | x_refsource_CONFIRMMitigationPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 11, 2017
Updated Aug 5, 2024
Reserved May 11, 2017
Link CVE-2017-8903
CISA Vulnrichment
Updated n/a