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nvd[email protected]NVD:CVE-2018-1087
HistoryMay 15, 2018 - 4:29 p.m.

CVE-2018-1087

2018-05-1516:29:00
CWE-250
web.nvd.nist.gov
1

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

28.1%

kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel’s KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.

Affected configurations

NVD
Node
linuxlinux_kernelMatch4.16
OR
linuxlinux_kernelMatch4.16rc7
OR
linuxlinux_kernelMatch4.17rc1
OR
linuxlinux_kernelMatch4.17rc2
OR
linuxlinux_kernelMatch4.17rc3
Node
canonicalubuntu_linuxMatch14.04lts
OR
canonicalubuntu_linuxMatch16.04lts
OR
canonicalubuntu_linuxMatch17.10
Node
debiandebian_linuxMatch8.0
OR
debiandebian_linuxMatch9.0
Node
redhatenterprise_linuxMatch7.0
OR
redhatenterprise_linux_desktopMatch7.0
OR
redhatenterprise_linux_serverMatch7.0
OR
redhatenterprise_linux_server_ausMatch7.2
OR
redhatenterprise_linux_server_ausMatch7.3
OR
redhatenterprise_linux_server_ausMatch7.4
OR
redhatenterprise_linux_server_eusMatch7.3
OR
redhatenterprise_linux_server_eusMatch7.4
OR
redhatenterprise_linux_server_eusMatch7.5
OR
redhatenterprise_linux_server_tusMatch7.2
OR
redhatenterprise_linux_server_tusMatch7.3
OR
redhatenterprise_linux_server_tusMatch7.4
OR
redhatenterprise_linux_virtualizationMatch4.0
OR
redhatenterprise_linux_workstationMatch7.0

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

28.1%