CVE-2017-14319

Impact:
Important
Public Date:
2017-09-12
Bugzilla:
1486710: CVE-2017-14319 xsa234 xen: insufficient grant unmapping checks for x86 PV guests (XSA-234)

The MITRE CVE dictionary describes this issue as:

A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.

Find out more about CVE-2017-14319 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 8.8
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
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 Andrew Cooper (Citrix) for reporting this issue.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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