Home/CVE/lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may
CVE

CVE-2018-6556

lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may

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.

LOW · CVSS 3.3 EPSS 0.00066
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
▤

Affected Products & Versions

7
canonical ubuntu linuxall versions
linuxcontainers lxc>= 2.0.0 and <= 2.0.9
linuxcontainers lxc>= 3.0.0 and < 3.0.2
suse caas platformall versions
suse openstack cloudall versions
suse linux enterprise serverall versions
opensuse leapall versions
▣

Scoring & Timeline

3.3
LOW · CVSS v3.0 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Aug 2018 · 03:29 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2024:0342-1
suse-csafopenSUSE-SU-2024:11030-1
suse-csafopenSUSE-SU-2024:12935-1
suse-csafopenSUSE-SU-2019:1275-1
suse-csafopenSUSE-SU-2019:1230-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591Issue TrackingThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=988348Issue TrackingPatch
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