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CVE-2018-6954

CVE-2018-6954

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

systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.

CVSS 7.8 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • systemd Debian:12

    Affected ranges
    • ECOSYSTEM: < 238-1

    Update to 238-1

  • systemd Debian:13

    Affected ranges
    • ECOSYSTEM: < 238-1

    Update to 238-1

  • systemd Debian:14

    Affected ranges
    • ECOSYSTEM: < 238-1

    Update to 238-1

  • systemd Ubuntu:16.04:LTS

    Versions
    • 225-1ubuntu9
    • 227-2ubuntu1
    • 227-2ubuntu2
    • 228-1ubuntu2
    • 228-2ubuntu1
    • 228-2ubuntu2
    • 228-3ubuntu1
    • 228-4ubuntu1
    • 228-4ubuntu2
    • 228-5ubuntu1
    • 228-5ubuntu2
    • 228-5ubuntu3
    • 228-6ubuntu1
    • 229-1ubuntu2
    • 229-1ubuntu4
    • 229-2ubuntu1
    • 229-3ubuntu1
    • 229-3ubuntu2
    • 229-4ubuntu1
    • 229-4ubuntu4
    • 229-4ubuntu5
    • 229-4ubuntu6
    • 229-4ubuntu7
    • 229-4ubuntu8
    • 229-4ubuntu10
    • 229-4ubuntu11
    • 229-4ubuntu12
    • 229-4ubuntu13
    • 229-4ubuntu16
    • 229-4ubuntu17
    • 229-4ubuntu19
    • 229-4ubuntu20
    • 229-4ubuntu21
    • 229-4ubuntu21.1
    • 229-4ubuntu21.2
    • 229-4ubuntu21.3
    • 229-4ubuntu21.4
    • 229-4ubuntu21.5
    • 229-4ubuntu21.6
    • 229-4ubuntu21.8
    • 229-4ubuntu21.9
    • 229-4ubuntu21.10
    Affected ranges
    • ECOSYSTEM: < 229-4ubuntu21.15

    Update to 229-4ubuntu21.15

  • systemd Ubuntu:18.04:LTS

    Versions
    • 234-2ubuntu12
    • 235-2ubuntu3
    • 235-3ubuntu2
    • 235-3ubuntu3
    • 237-3ubuntu3
    • 237-3ubuntu4
    • 237-3ubuntu6
    • 237-3ubuntu7
    • 237-3ubuntu8
    • 237-3ubuntu10
    • 237-3ubuntu10.2
    • 237-3ubuntu10.3
    • 237-3ubuntu10.4
    • 237-3ubuntu10.6
    Affected ranges
    • ECOSYSTEM: < 237-3ubuntu10.9

    Update to 237-3ubuntu10.9

Original sources

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