NVD

CVE-2017-7518 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.8 HIGH

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

Nist CVSS score does not match with CNA score

CNA: Red Hat, Inc.

Base Score: 5.5 MEDIUM

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

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 4.6 MEDIUM

Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.openwall.com/lists/oss-security/2017/06/23/5	Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/99263	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1038782	Third Party Advisory VDB Entry
https://access.redhat.com/articles/3290921	Permissions Required Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0395	Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0412	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518	Issue Tracking Patch Third Party Advisory
https://usn.ubuntu.com/3619-1/	Third Party Advisory
https://usn.ubuntu.com/3619-2/	Third Party Advisory
https://usn.ubuntu.com/3754-1/	Third Party Advisory
https://www.debian.org/security/2017/dsa-3981	Third Party Advisory
https://www.spinics.net/lists/kvm/msg151817.html	Mailing List Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-755	Improper Handling of Exceptional Conditions	NIST
CWE-250	Execution with Unnecessary Privileges	Red Hat, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

8 change records found show changes

Initial Analysis by NIST 10/10/2018 2:39:46 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: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::::::::* versions up to (excluding) 4.12
Added	CPE Configuration		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:7.4::::::: cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4::::::: cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5::::::: cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::
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/2017/06/23/5 No Types Assigned	http://www.openwall.com/lists/oss-security/2017/06/23/5 Mailing List, Patch, Third Party Advisory
Changed	Reference Type	http://www.securityfocus.com/bid/99263 No Types Assigned	http://www.securityfocus.com/bid/99263 Third Party Advisory, VDB Entry
Changed	Reference Type	http://www.securitytracker.com/id/1038782 No Types Assigned	http://www.securitytracker.com/id/1038782 Third Party Advisory, VDB Entry
Changed	Reference Type	https://access.redhat.com/articles/3290921 No Types Assigned	https://access.redhat.com/articles/3290921 Permissions Required, Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:0395 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:0395 Third Party Advisory
Changed	Reference Type	https://access.redhat.com/errata/RHSA-2018:0412 No Types Assigned	https://access.redhat.com/errata/RHSA-2018:0412 Third Party Advisory
Changed	Reference Type	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518 No Types Assigned	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518 Issue Tracking, Patch, Third Party Advisory
Changed	Reference Type	https://usn.ubuntu.com/3619-1/ No Types Assigned	https://usn.ubuntu.com/3619-1/ Third Party Advisory
Changed	Reference Type	https://usn.ubuntu.com/3619-2/ No Types Assigned	https://usn.ubuntu.com/3619-2/ Third Party Advisory
Changed	Reference Type	https://usn.ubuntu.com/3754-1/ No Types Assigned	https://usn.ubuntu.com/3754-1/ Third Party Advisory
Changed	Reference Type	https://www.debian.org/security/2017/dsa-3981 No Types Assigned	https://www.debian.org/security/2017/dsa-3981 Third Party Advisory
Changed	Reference Type	https://www.spinics.net/lists/kvm/msg151817.html No Types Assigned	https://www.spinics.net/lists/kvm/msg151817.html Mailing List, Patch

CVE Modified by Red Hat, Inc. 7/31/2018 9:29:00 PM

Action	Type	New Value
Added	Reference	http://www.securityfocus.com/bid/99263 [No Types Assigned]
Added	Reference	http://www.securitytracker.com/id/1038782 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:0395 [No Types Assigned]
Added	Reference	https://access.redhat.com/errata/RHSA-2018:0412 [No Types Assigned]
Added	Reference	https://usn.ubuntu.com/3619-1/ [No Types Assigned]
Added	Reference	https://usn.ubuntu.com/3619-2/ [No Types Assigned]
Added	Reference	https://www.debian.org/security/2017/dsa-3981 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2017-7518
NVD Published Date:
07/30/2018
NVD Last Modified:
11/06/2023
Source:
Red Hat, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2017-7518 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by Red Hat, Inc. 5/14/2024 12:45:20 AM

CVE Modified by Red Hat, Inc. 11/06/2023 9:50:11 PM

CVE Modified by Red Hat, Inc. 3/11/2020 6:15:21 PM

CVE Modified by Red Hat, Inc. 10/09/2019 7:29:41 PM

CWE Remap by NIST 10/02/2019 8:03:26 PM

Initial Analysis by NIST 10/10/2018 2:39:46 PM

CVE Modified by Red Hat, Inc. 8/24/2018 6:29:02 AM

CVE Modified by Red Hat, Inc. 7/31/2018 9:29:00 PM

Quick Info