CVE-2018-6556 The lxc-user-nic component of LXC allows unprivileged users to open arbitrary files

2018-08-1015:00:00

canonical

www.cve.org

AI Score

3.9

Confidence

High

EPSS

0.001

Percentile

33.6%

JSON

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.

CNA Affected

[
  {
    "product": "LXC",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "2.0*",
        "status": "affected",
        "version": "2.0.9",
        "versionType": "custom"
      },
      {
        "changes": [
          {
            "at": "3.0.2",
            "status": "unaffected"
          }
        ],
        "lessThan": "3.0*",
        "status": "affected",
        "version": "3.0.0",
        "versionType": "custom"
      }
    ]
  }
]