National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-6556 Detail

Current Description

lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.

Source:  MITRE
Description Last Modified:  08/10/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 3.3 LOW
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N (V3 legend)
Impact Score: 1.4
Exploitability Score: 1.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591 Issue Tracking Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=988348 Issue Tracking Patch
https://usn.ubuntu.com/usn/usn-3730-1 Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Channel and Path Errors (CWE-417)

Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-6556
NVD Published Date:
08/10/2018
NVD Last Modified:
10/12/2018