National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-2583 Detail

Current Description

The load_segment_descriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service (guest OS crash) or gain guest OS privileges via a crafted application.

Source:  MITRE
Description Last Modified:  02/06/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.4 HIGH
Vector: AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 2.5

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
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://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=33ab91103b3415e12457e3104f0e4517ce12d0f3 Issue Tracking Third Party Advisory
http://www.debian.org/security/2017/dsa-3791
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.5 Release Notes Vendor Advisory
http://www.openwall.com/lists/oss-security/2017/01/19/2 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/95673 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:1615
https://access.redhat.com/errata/RHSA-2017:1616
https://bugzilla.redhat.com/show_bug.cgi?id=1414735 Issue Tracking Patch
https://github.com/torvalds/linux/commit/33ab91103b3415e12457e3104f0e4517ce12d0f3 Issue Tracking Patch Third Party Advisory
https://usn.ubuntu.com/3754-1/

Technical Details

Vulnerability Type (View All)

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

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-2583
NVD Published Date:
02/06/2017
NVD Last Modified:
08/24/2018