CVE-2017-7518

CVSS V2 Medium 4.6 CVSS V3 High 7.8
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.
Overview
  • CVE ID
  • CVE-2017-7518
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2018-07-30T15:29:00
  • Last Modified Date
  • 2019-10-09T23:29:41
Weakness Enumerations
CWE URL
CWE-755 http://cwe.mitre.org/data/definitions/755.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 4.12
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.spinics.net/lists/kvm/msg151817.html Mailing List Patch
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518 Issue Tracking Patch Third Party Advisory
https://access.redhat.com/articles/3290921 Permissions Required Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/06/23/5 Mailing List Patch Third Party Advisory
https://www.debian.org/security/2017/dsa-3981 Third Party Advisory
https://usn.ubuntu.com/3619-2/ Third Party Advisory
https://usn.ubuntu.com/3619-1/ Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0412 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0395 Third Party Advisory
http://www.securitytracker.com/id/1038782 Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/99263 Third Party Advisory VDB Entry
https://usn.ubuntu.com/3754-1/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-7518
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7518
History
Created Old Value New Value Data Type Notes
2022-05-10 17:08:39 Added to TrackCVE
2022-12-03 10:38:44 2018-07-30T15:29Z 2018-07-30T15:29:00 CVE Published Date updated
2022-12-03 10:38:44 2019-10-09T23:29:41 CVE Modified Date updated
2022-12-03 10:38:44 Modified Vulnerability Status updated