National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-12904 Detail

Current Description

In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested virtualization is used, local attackers could cause L1 KVM guests to VMEXIT, potentially allowing privilege escalations and denial of service attacks due to lack of checking of CPL.

Source:  MITRE
Description Last Modified:  06/27/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 4.9 MEDIUM
Vector: AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L (V3 legend)
Impact Score: 3.4
Exploitability Score: 1.4


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

CVSS v2.0 Severity and Metrics:

Base Score: 4.4 MEDIUM
Vector: (AV:L/AC:M/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.4


Access Vector (AV): Local
Access Complexity (AC): Medium
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=727ba748e110b4de50d142edca9d6a9b7e6111d8 Patch Vendor Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1589 Exploit Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.2 Release Notes Vendor Advisory
https://github.com/torvalds/linux/commit/727ba748e110b4de50d142edca9d6a9b7e6111d8 Patch Third Party Advisory
https://usn.ubuntu.com/3752-1/ Third Party Advisory
https://usn.ubuntu.com/3752-2/ Third Party Advisory
https://usn.ubuntu.com/3752-3/ Third Party Advisory
https://www.exploit-db.com/exploits/44944/ Exploit Third Party Advisory VDB Entry

Technical Details

Vulnerability Type (View All)

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

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
4.17.2

Configuration 2 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-12904
NVD Published Date:
06/27/2018
NVD Last Modified:
03/27/2019