Vulnerability Details : CVE-2018-6556
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.
Products affected by CVE-2018-6556
- cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp4:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux_enterprise_server:11:sp3:*:*:ltss:*:*:*
- cpe:2.3:a:suse:openstack_cloud:6:*:*:*:*:*:*:*
- cpe:2.3:a:suse:caas_platform:2.0:*:*:*:*:*:*:*
- cpe:2.3:a:suse:caas_platform:1.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
- cpe:2.3:a:linuxcontainers:lxc:*:*:*:*:*:*:*:*
- cpe:2.3:a:linuxcontainers:lxc:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-6556
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 10 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-6556
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:P/I:N/A:N |
3.9
|
2.9
|
NIST | |
|
3.3
|
LOW | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
1.8
|
1.4
|
NIST |
CWE ids for CVE-2018-6556
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-6556
-
https://security.gentoo.org/glsa/201808-02
LinuX Containers user space utilities: Arbitrary file read (GLSA 201808-02) — Gentoo securityThird Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=988348
Bug 988348 – VUL-0: CVE-2018-6556: lxc: enable setuid bit on lxc-user-nicIssue Tracking;Patch
-
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html
[security-announce] openSUSE-SU-2019:1227-1: important: Security updateMailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.html
[security-announce] openSUSE-SU-2019:1230-1: moderate: Security update fMailing List;Third Party Advisory
-
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591
Bug #1783591 “lxc-user-nic allows unprivileged users to open arb...” : Bugs : lxc package : UbuntuIssue Tracking;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html
[security-announce] openSUSE-SU-2019:1481-1: important: Security update
-
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html
[security-announce] openSUSE-SU-2019:1275-1: important: Security updateMailing List;Third Party Advisory
-
https://usn.ubuntu.com/usn/usn-3730-1
USN-3730-1: LXC vulnerability | Ubuntu security noticesThird Party Advisory
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