Information Exposure Affecting lxc package, versions *


Severity

Recommended
0.0
low
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-UBUNTU2004-LXC-3188352
  • published4 Jan 2023
  • disclosed1 Jan 2023

Introduced: 1 Jan 2023

CVE-2022-47952  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 lxc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream lxc package and not the lxc package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because "Failed to open" often indicates that a file does not exist, whereas "does not refer to a network namespace path" often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that "we will report back to the user that the open() failed but the user has no way of knowing why it failed"; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.

CVSS Scores

version 3.1