HIGH
xen: x86: broken check in memory_exchange() permits PV guest breakout (XSA-212)
Published Apr 4, 2017
8.2
HIGHCVSS 3.0
EPSS 1.57%
Description
An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
8.2 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Changed
Confidentiality Impact High
Integrity Impact High
Availability Impact High
1 other source (Red Hat) ▾
8.0 HIGH Red Hat
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required High
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.
1.57% 0.01569
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01569
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.57% (0.01569) | 74.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.57% (0.01569) | 72.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.28% (0.01282) | 78.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00101) | 43.16th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.10% (0.00101) | 41.94th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00101) | 39.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02685) | 82.26th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02685) | 80.51th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02685) | 62.15th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.85% (0.07855) | 85.01th | v1 |
| Jan 6, 2022 | 7.85% (0.07855) | 84.84th | v1 |
| Sep 1, 2021 | 7.85% (0.07855) | 92.31th | v1 |
| Apr 14, 2021 | 7.85% (0.07855) | 0.00th | v1 |
Weaknesses (1)
References (12)
- http://openwall.com/lists/oss-security/2017/04/04/3 x_refsource_CONFIRMMailing ListThird Party Advisory
- http://www.debian.org/security/2017/dsa-3847 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/97375 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038223 vdb-entryx_refsource_SECTRACK
- http://xenbits.xen.org/xsa/advisory-212.html x_refsource_CONFIRMPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2017-7228 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1434741 Issue Tracking
- https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt x_refsource_CONFIRM
- https://googleprojectzero.blogspot.com/2017/04/pandavirtualization-exploiting-xen.html x_refsource_MISCTechnical DescriptionThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-7228
- https://www.cve.org/CVERecord?id=CVE-2017-7228
- https://www.exploit-db.com/exploits/41870/ exploitx_refsource_EXPLOIT-DB
| Link | Providers | Tags |
|---|---|---|
| http://openwall.com/lists/oss-security/2017/04/04/3 | x_refsource_CONFIRMMailing ListThird Party Advisory | |
| http://www.debian.org/security/2017/dsa-3847 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/97375 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1038223 | vdb-entryx_refsource_SECTRACK | |
| http://xenbits.xen.org/xsa/advisory-212.html | x_refsource_CONFIRMPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-7228 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1434741 | Issue Tracking | |
| https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-029-2017.txt | x_refsource_CONFIRM | |
| https://googleprojectzero.blogspot.com/2017/04/pandavirtualization-exploiting-xen.html | x_refsource_MISCTechnical DescriptionThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-7228 | ||
| https://www.cve.org/CVERecord?id=CVE-2017-7228 | ||
| https://www.exploit-db.com/exploits/41870/ | exploitx_refsource_EXPLOIT-DB |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 4, 2017
Updated Aug 5, 2024
Reserved Mar 22, 2017
Link CVE-2017-7228
CISA Vulnrichment
Updated n/a