CVE-2018-6556
Low
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. 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.
SeverityLow
CVSS3.3
Exploit probability—
Product
Canonical Ubuntu Linux
PublishedAug 10, 2018
First seenAug 10, 2018
How to fix
Update
- linuxcontainers lxc3.0.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| canonical ubuntu_linux | 18.04 | — |
| linuxcontainers lxc | 2.0.0 ≤ v ≤ 2.0.9, 3.0.0 ≤ v < 3.0.2 | 3.0.2 |
| suse caas_platform | 1.0, 2.0 | — |
| suse openstack_cloud | 6 | — |
| suse suse_linux_enterprise_server | 11 | — |
| opensuse leap | 15.0 | — |
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