CVE-2018-6556

Advisory lineage Upstream: 0 Downstream: 8
Modified
Published: 10 Aug 2018, 15:00
Last modified:17 Sept 2024, 03:38

Vulnerability Summary

Overall Risk (default)
low
13/100
CVSS Score
3.3 LOW
v3.0 (nvd)
EPSS Score
0.07% LOW
0% probability +0.01%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

10 Aug 2018, 15:00
Published
Vulnerability first disclosed
17 Sept 2024, 03:38
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.0•LOW•Score: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.07%• Percentile: 21%

Techniques & Countermeasures

  • CWE-417•Communication Channel Errors

    Weaknesses in this category are related to improper handling of communication channels and access paths. These weaknesses include problems in creating, managing, or removing alternate channels and alternate paths. Some of these can overlap virtual file problems and are commonly used in "bypass" attacks, such as those that exploit authentication errors.

Affected Systems

  • canonical•ubuntu_linux

    18.04

  • linuxcontainers•lxc

    ≥ 2.0.0, ≤ 2.0.9 | ≥ 3.0.0, < 3.0.2

  • opensuse•leap

    15.0

  • suse•caas_platform

    1.0 | 2.0

  • suse•openstack_cloud

    6

  • suse•suse_linux_enterprise_server

    11:sp3 | 11:sp4

References (8)