CVE-2017-7228

Impact:
Important
Public Date:
2017-04-04
Bugzilla:
1434741: CVE-2017-7228 xsa212 xen: x86: broken check in memory_exchange() permits PV guest breakout (XSA-212)

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2017-7228 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 8
CVSS3 Base Metrics 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 High
Integrity Impact High
Availability Impact High

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 xen Will not fix

Acknowledgements

Red Hat would like to thank the Xen project for reporting this issue.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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