Upstream information

CVE-2018-6556 at MITRE


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.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.1
Vector AV:L/AC:L/Au:N/C:P/I:N/A:N
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 3.3 5.1
Access Vector Local Local
Access Complexity Low Low
Privileges Required Low None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact Low Low
Integrity Impact None None
Availability Impact None Low
SUSE Bugzilla entries: 1122185 [NEW], 988348 [REOPENED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
openSUSE Leap 15.0
  • liblxc-devel >= 2.0.9-lp150.2.6.1
  • liblxc1 >= 2.0.9-lp150.2.6.1
  • liblxc1-debuginfo >= 2.0.9-lp150.2.6.1
  • lxc >= 2.0.9-lp150.2.6.1
  • lxc-bash-completion >= 3.1.0-lp150.2.10.1
  • lxc-debuginfo >= 2.0.9-lp150.2.6.1
  • lxc-debugsource >= 2.0.9-lp150.2.6.1
  • lxcfs >= 3.0.3-lp150.2.3.1
  • lxcfs-debuginfo >= 3.0.3-lp150.2.3.1
  • lxcfs-debugsource >= 3.0.3-lp150.2.3.1
  • lxcfs-hooks-lxc >= 3.0.3-lp150.2.3.1
  • pam_cgfs >= 3.1.0-lp150.2.10.1
  • pam_cgfs-debuginfo >= 3.1.0-lp150.2.10.1

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise SDK 11 SP4 lxc Affected
SUSE Linux Enterprise Server 11 SP3 LTSS lxc Affected
SUSE Linux Enterprise Server 11 SP4 lxc Affected