National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-16884 Detail

Current Description

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.0 HIGH
Vector: AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 2.1


Attack Vector (AV): Adjacent
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: 6.7 MEDIUM
Vector: (AV:A/AC:L/Au:S/C:P/I:P/A:C) (V2 legend)
Impact Subscore: 8.5
Exploitability Subscore: 5.1


Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): Single
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Complete
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.securityfocus.com/bid/106253 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884 Issue Tracking Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html Mailing List Third Party Advisory
https://patchwork.kernel.org/cover/10733767/ Patch Vendor Advisory
https://patchwork.kernel.org/patch/10733769/ Patch Vendor Advisory
https://support.f5.com/csp/article/K21430012 Third Party Advisory
https://usn.ubuntu.com/3932-1/ Third Party Advisory
https://usn.ubuntu.com/3932-2/ Third Party Advisory
https://usn.ubuntu.com/3980-1/
https://usn.ubuntu.com/3980-2/
https://usn.ubuntu.com/3981-1/
https://usn.ubuntu.com/3981-2/

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:a:redhat:enterprise_mrg:2.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 4 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)


Change History

13 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-16884
NVD Published Date:
12/18/2018
NVD Last Modified:
05/28/2019