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CVE-2019-7303

CVE-2019-7303 · Snapd seccomp filter TIOCSTI ioctl bypass

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

A vulnerability in the seccomp filters of Canonical snapd before version 2.37.4 allows a strict mode snap to insert characters into a terminal on a 64-bit host. The seccomp rules were generated to match 64-bit ioctl(2) commands on a 64-bit platform; however, the Linux kernel only uses the lower 32 bits to determine which ioctl(2) commands to run. This issue affects: Canonical snapd versions prior to 2.37.4.

CVSS 5.7 · Medium · EPSS 3.7% · Public exploit · Fix available

Published
Updated

Stack: system

Affected products and versions

  • snapd

    Versions
    • ≥ unspecified, < 2.37.4: Affected (custom)

    Update to 2.37.4

  • snapd Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.37.4-1

    Update to 2.37.4-1

  • snapd Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.37.4-1

    Update to 2.37.4-1

  • snapd Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.37.4-1

    Update to 2.37.4-1

  • snapd Ubuntu:14.04:LTS

    Versions
    • 2.21~14.04.2
    • 2.22.2~14.04
    • 2.22.3~14.04
    • 2.22.6~14.04
    • 2.23.1~14.04
    • 2.24.1~14.04
    • 2.25~14.04
    • 2.26.10~14.04
    • 2.27.5~14.04
    • 2.28.5~14.04
    • 2.29.4.2~14.04
    • 2.32.3.2~14.04
    • 2.32.9~14.04
    • 2.33.1~14.04
    • 2.34.2~14.04
    • 2.34.2~14.04.1
    Affected ranges
    • ECOSYSTEM: < 2.37.4~14.04.1

    Update to 2.37.4~14.04.1

  • snapd Ubuntu:16.04:LTS

    Versions
    • 1.9
    • 1.9.1.1
    • 1.9.2
    • 2.0
    • 2.0.1
    • 2.0.2
    • 2.0.3
    • 2.0.5
    • 2.0.8
    • 2.0.9
    • 2.0.10
    • 2.11+0.16.04
    • 2.12+0.16.04
    • 2.13
    • 2.14.2~16.04
    • 2.15.2ubuntu1
    • 2.16ubuntu3
    • 2.17.1ubuntu1
    • 2.20.1ubuntu1
    • 2.21
    • 2.22.2
    • 2.22.3
    • 2.22.6
    • 2.23.1
    • 2.24.1
    • 2.25
    • 2.26.10
    • 2.27.5
    • 2.28.5
    • 2.29.4.2
    • 2.32.3.2
    • 2.32.9
    • 2.33.1ubuntu2
    • 2.34.2
    • 2.34.2ubuntu0.1
    • 2.37.4
    Affected ranges
    • ECOSYSTEM: < 2.37.4ubuntu0.1

    Update to 2.37.4ubuntu0.1

  • snapd Ubuntu:18.04:LTS

    Versions
    • 2.28.5+17.10
    • 2.29.4.1+18.04
    • 2.29.4.2+18.04
    • 2.31.1+18.04
    • 2.32+18.04~pre5
    • 2.32+18.04~pre6
    • 2.32+18.04
    • 2.32.3.2+18.04
    • 2.32.5+18.04
    • 2.32.8+18.04
    • 2.32.9+18.04
    • 2.33.1+18.04ubuntu2
    • 2.34.2+18.04
    • 2.34.2+18.04.1
    • 2.37.1+18.04
    • 2.37.1.1+18.04
    • 2.37.4+18.04
    Affected ranges
    • ECOSYSTEM: < 2.37.4+18.04.1

    Update to 2.37.4+18.04.1

Original sources

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