NVD - CVE-2018-1087

CVE-2018-1087 Detail

Current Description

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.

Source: MITRE
Description Last Modified: 05/15/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.6 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.openwall.com/lists/oss-security/2018/05/08/5	Mailing List
http://www.securityfocus.com/bid/104127	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040862	Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1318	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1345	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1347	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1348	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1355	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1524	Third Party Advisory
https://access.redhat.com/security/vulnerabilities/pop_ss	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1087	Issue Tracking
https://usn.ubuntu.com/3641-1/	Third Party Advisory
https://usn.ubuntu.com/3641-2/	Third Party Advisory
https://www.debian.org/security/2018/dsa-4196	Third Party Advisory

Technical Details

Vulnerability Type (View All)

Permissions, Privileges, and Access Control (CWE-264)

Vulnerable software and versions Switch to CPE 2.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

3 change records found - show changes

Initial Analysis - 6/19/2018 2:25:33 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::* cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::* cpe:2.3:o:canonical:ubuntu_linux:17.10:::::::
Added	CPE Configuration		OR cpe:2.3:o:debian:debian_linux:8.0::::::: cpe:2.3:o:debian:debian_linux:9.0:::::::
Added	CPE Configuration		OR cpe:2.3:o:linux:linux_kernel:4.16::::::: cpe:2.3:o:linux:linux_kernel:4.16:rc7::::::* cpe:2.3:o:linux:linux_kernel:4.17:rc1::::::* cpe:2.3:o:linux:linux_kernel:4.17:rc2::::::* cpe:2.3:o:linux:linux_kernel:4.17:rc3::::::*
Added	CPE Configuration		Record truncated, showing 500 of 955 characters. View Entire Change Record OR cpe:2.3:o:redhat:enterprise_linux:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_desktop:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_server:7.0::::::: cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2::::::: cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3::::::: cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4::::::: cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3::::::: *cpe:2.3:o:redhat:enterpris
Added	CVSS V2		(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Added	CVSS V3		AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Added	CWE		CWE-264
Changed	Reference Type	http://www.openwall.com/lists/oss-security/2018/05/08/5 No Types Assigned	http://www.openwall.com/lists/oss-security/2018/05/08/5 Mailing List
Changed	Reference Type	http://www.securityfocus.com/bid/104127 No Types Assigned	http://www.securityfocus.com/bid/104127 Third Party Advisory, VDB Entry
Changed	Reference Type	http://www.securitytracker.com/id/1040862 No Types Assigned	http://www.securitytracker.com/id/1040862 Third Party Advisory, VDB Entry
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:1318 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:1318 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:1345 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:1345 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:1347 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:1347 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:1348 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:1348 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:1355 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:1355 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:1524 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:1524 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/security/vulnerabilities/pop_ss No Types Assigned	https://access.redhat.com/security/vulnerabilities/pop_ss Third Party Advisory
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1087 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1087 Issue Tracking
Changed	Reference Type	https://usn.ubuntu.com/3641-1/ No Types Assigned	https://usn.ubuntu.com/3641-1/ Third Party Advisory
Changed	Reference Type	https://usn.ubuntu.com/3641-2/ No Types Assigned	https://usn.ubuntu.com/3641-2/ Third Party Advisory
Changed	Reference Type	https://www.debian.org/security/2018/dsa-4196 No Types Assigned	https://www.debian.org/security/2018/dsa-4196 Third Party Advisory

CVE Modified by MITRE - 5/16/2018 9:29:11 PM

Action	Type	New Value
Added	Reference	http://www.securityfocus.com/bid/104127 [No Types Assigned]
Added	Reference	http://www.securitytracker.com/id/1040862 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:1318 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:1345 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:1347 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:1348 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:1355 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:1524 [No Types Assigned]
Added	Reference	https://usn.ubuntu.com/3641-2/ [No Types Assigned]
Added	Reference	https://www.debian.org/security/2018/dsa-4196 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2018-1087
NVD Published Date:
05/15/2018
NVD Last Modified:
06/19/2018

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