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CVE-2022-47952

CVE-2022-47952

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 3.3 · Low · EPSS 0.7% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • lxc Debian:12

    Affected ranges
    • ECOSYSTEM: < 1:5.0.2-1

    Update to 1:5.0.2-1

  • lxc Debian:13

    Affected ranges
    • ECOSYSTEM: < 1:5.0.2-1

    Update to 1:5.0.2-1

  • lxc Debian:14

    Affected ranges
    • ECOSYSTEM: < 1:5.0.2-1

    Update to 1:5.0.2-1

  • lxc Ubuntu:Pro:18.04:LTS

    Versions
    • 2.1.0-0ubuntu1
    • 2.1.1-0ubuntu1
    • 3.0.0~beta1-0ubuntu3
    • 3.0.0~beta2-0ubuntu2
    • 3.0.0~beta3-0ubuntu1
    • 3.0.0~beta4-0ubuntu1
    • 3.0.0-0ubuntu1
    • 3.0.0-0ubuntu2
    • 3.0.1-0ubuntu1~18.04.1
    • 3.0.1-0ubuntu1~18.04.2
    • 3.0.2-0ubuntu1~18.04.1
    • 3.0.3-0ubuntu1~18.04.1
    • 3.0.3-0ubuntu1~18.04.3
    Affected ranges
    • ECOSYSTEM: < 3.0.3-0ubuntu1~18.04.3+esm1

    Update to 3.0.3-0ubuntu1~18.04.3+esm1

  • lxc Ubuntu:Pro:20.04:LTS

    Versions
    • 3.0.4-0ubuntu1
    • 3.0.4-0ubuntu2
    • 1:4.0.0-0ubuntu2
    • 1:4.0.1-0ubuntu1
    • 1:4.0.1-0ubuntu2
    • 1:4.0.2-0ubuntu1
    • 1:4.0.6-0ubuntu1~20.04.1
    • 1:4.0.12-0ubuntu1~20.04.1
    Affected ranges
    • ECOSYSTEM: < 1:4.0.12-0ubuntu1~20.04.1+esm1

    Update to 1:4.0.12-0ubuntu1~20.04.1+esm1

  • lxc Ubuntu:Pro:22.04:LTS

    Versions
    • 1:4.0.10-0ubuntu5
    • 1:4.0.12-0ubuntu1
    • 1:4.0.12-0ubuntu2
    • 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1
    • 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1
    Affected ranges
    • ECOSYSTEM: < 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1

    Update to 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1

  • lxc Ubuntu:Pro:24.04:LTS

    Versions
    • 1:5.0.1-0ubuntu7
    • 1:5.0.1-0ubuntu8
    • 1:5.0.3-2ubuntu5
    • 1:5.0.3-2ubuntu7
    • 1:5.0.3-2ubuntu7.1
    • 1:5.0.3-2ubuntu7.2
    • 1:5.0.3-2ubuntu7.3
    Affected ranges
    • ECOSYSTEM: < 1:5.0.3-2ubuntu7.3+esm1

    Update to 1:5.0.3-2ubuntu7.3+esm1

Original sources

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