CVE-2017-14319

Severity

72%

Complexity

39%

Confidentiality

165%

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.

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.

CVSS 3.0 Base Score 8.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Overview

First reported 7 years ago

2017-09-12 15:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

Xen

References

100819

Third Party Advisory, VDB Entry

1039351

Third Party Advisory, VDB Entry

http://xenbits.xen.org/xsa/advisory-234.html

Patch, Vendor Advisory

[debian-lts-announce] 20181018 [SECURITY] [DLA 1549-1] xen security update

https://support.citrix.com/article/CTX227185

DSA-4050

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