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Last updated: 8/30/2014 2:25:17 PM

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Vulnerability Summary for CVE-2013-6456

Original release date: 04/15/2014
Last revised: 05/09/2014
Source: US-CERT/NIST

Overview

The LXC driver (lxc/lxc_driver.c) in libvirt 1.0.1 through 1.2.1 allows local users to (1) delete arbitrary host devices via the virDomainDeviceDettach API and a symlink attack on /dev in the container; (2) create arbitrary nodes (mknod) via the virDomainDeviceAttach API and a symlink attack on /dev in the container; and cause a denial of service (shutdown or reboot host OS) via the (3) virDomainShutdown or (4) virDomainReboot API and a symlink attack on /dev/initctl in the container, related to "paths under /proc/$PID/root" and the virInitctlSetRunLevel function.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.8 (MEDIUM) (AV:A/AC:M/Au:S/C:N/I:P/A:C) (legend)
Impact Subscore: 7.8
Exploitability Subscore: 4.4
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Medium
Authentication: Required to exploit
Impact Type: Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: SUSE
Name: openSUSE-SU-2014:0593
External Source: BID
Name: 65743
External Source: CONFIRM
Name: http://libvirt.org/git/?p=libvirt.git;a=commit;h=5fc590ad9f4
Type: Patch Information
External Source: FEDORA
Name: FEDORA-2014-2864
External Source: SECUNIA
Name: 56187
Type: Advisory
External Source: CONFIRM
Name: http://libvirt.org/news.html
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=1045643
External Source: SECUNIA
Name: 56215
Type: Advisory
External Source: MISC
Name: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732394
External Source: CONFIRM
Name: http://security.libvirt.org/2013/0018.html
Type: Advisory

Technical Details

Vulnerability Type (View All)