Executive Summary

Summary
Title LinuX Containers user space utilities: Arbitrary file read
Informations
Name GLSA-201808-02 First vendor Publication 2018-08-22
Vendor Gentoo Last vendor Modification 2018-08-22
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 2.1 Attack Range Local
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability has been found in LXC which may allow for arbitrary file access (read-only).

Background

LinuX Containers user space utilities.

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.

Impact

A local unprivileged user could use this flaw to access arbitrary files, including special device files.

Workaround

There is no known workaround at this time.

Resolution

All LXC users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/lxc-3.0.1-r1"

References

[ 1 ] CVE-2018-6556 : https://nvd.nist.gov/vuln/detail/CVE-2018-6556

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201808-02

Original Source

Url : http://security.gentoo.org/glsa/glsa-201808-02.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-417 Channel and Path Errors

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 29
Application 2
Application 1
Os 1
Os 1
Os 2

Nessus® Vulnerability Scanner

Date Description
2018-08-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201808-02.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2018-10-13 00:25:16
  • Multiple Updates
2018-08-23 00:18:51
  • First insertion