CVE-2021-3709: Apport file permission bypass through emacs byte compilation errors

Published Oct 1, 2021
·
Updated

Function checkattachmentforerrors() in file data/general-hooks/ubuntu.py could be tricked into exposing private data via a constructed crash file. This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;

Affected Software

350 affected components
All of the following
Canonical Ubuntu Linux=14.04
Any of the following
Canonical apport=2.14.1-0ubuntu1
Canonical apport=2.14.1-0ubuntu2
Canonical apport=2.14.1-0ubuntu3
Canonical apport=2.14.1-0ubuntu3.1
Canonical apport=2.14.1-0ubuntu3.2
Canonical apport=2.14.1-0ubuntu3.3
Canonical apport=2.14.1-0ubuntu3.4
Canonical apport=2.14.1-0ubuntu3.5
Canonical apport=2.14.1-0ubuntu3.6
Canonical apport=2.14.1-0ubuntu3.7
Canonical apport=2.14.1-0ubuntu3.8
Canonical apport=2.14.1-0ubuntu3.9
Canonical apport=2.14.1-0ubuntu3.10
Canonical apport=2.14.1-0ubuntu3.11
Canonical apport=2.14.1-0ubuntu3.12
Canonical apport=2.14.1-0ubuntu3.13
Canonical apport=2.14.1-0ubuntu3.14
Canonical apport=2.14.1-0ubuntu3.15
Canonical apport=2.14.1-0ubuntu3.16
Canonical apport=2.14.1-0ubuntu3.17
Canonical apport=2.14.1-0ubuntu3.18
Canonical apport=2.14.1-0ubuntu3.19
Canonical apport=2.14.1-0ubuntu3.20
Canonical apport=2.14.1-0ubuntu3.21
Canonical apport=2.14.1-0ubuntu3.23
Canonical apport=2.14.1-0ubuntu3.24
Canonical apport=2.14.1-0ubuntu3.25
Canonical apport=2.14.1-0ubuntu3.27
Canonical apport=2.14.1-0ubuntu3.28
Canonical apport=2.14.1-0ubuntu3.29
Canonical apport=2.14.1-0ubuntu3.29\+esm7
All of the following
Canonical Ubuntu Linux=16.04
Any of the following
Canonical apport=2.20.1-0ubuntu1
Canonical apport=2.20.1-0ubuntu2
Canonical apport=2.20.1-0ubuntu2.1
Canonical apport=2.20.1-0ubuntu2.2
Canonical apport=2.20.1-0ubuntu2.4
Canonical apport=2.20.1-0ubuntu2.5
Canonical apport=2.20.1-0ubuntu2.6
Canonical apport=2.20.1-0ubuntu2.7
Canonical apport=2.20.1-0ubuntu2.8
Canonical apport=2.20.1-0ubuntu2.9
Canonical apport=2.20.1-0ubuntu2.10
Canonical apport=2.20.1-0ubuntu2.12
Canonical apport=2.20.1-0ubuntu2.13
Canonical apport=2.20.1-0ubuntu2.14
Canonical apport=2.20.1-0ubuntu2.15
Canonical apport=2.20.1-0ubuntu2.16
Canonical apport=2.20.1-0ubuntu2.17
Canonical apport=2.20.1-0ubuntu2.18
Canonical apport=2.20.1-0ubuntu2.19
Canonical apport=2.20.1-0ubuntu2.20
Canonical apport=2.20.1-0ubuntu2.21
Canonical apport=2.20.1-0ubuntu2.22
Canonical apport=2.20.1-0ubuntu2.23
Canonical apport=2.20.1-0ubuntu2.25
Canonical apport=2.20.1-0ubuntu2.26
Canonical apport=2.20.1-0ubuntu2.27
Canonical apport=2.20.1-0ubuntu2.28
Canonical apport=2.20.1-0ubuntu2.30
Canonical apport=2.20.1-0ubuntu2.30\+esm1
All of the following
Canonical Ubuntu Linux=18.04
Any of the following
Canonical apport=2.20.9-0ubuntu1
Canonical apport=2.20.9-0ubuntu2
Canonical apport=2.20.9-0ubuntu3
Canonical apport=2.20.9-0ubuntu4
Canonical apport=2.20.9-0ubuntu5
Canonical apport=2.20.9-0ubuntu6
Canonical apport=2.20.9-0ubuntu7
Canonical apport=2.20.9-0ubuntu7.1
Canonical apport=2.20.9-0ubuntu7.2
Canonical apport=2.20.9-0ubuntu7.3
Canonical apport=2.20.9-0ubuntu7.4
Canonical apport=2.20.9-0ubuntu7.5
Canonical apport=2.20.9-0ubuntu7.6
Canonical apport=2.20.9-0ubuntu7.7
Canonical apport=2.20.9-0ubuntu7.8
Canonical apport=2.20.9-0ubuntu7.9
Canonical apport=2.20.9-0ubuntu7.10
Canonical apport=2.20.9-0ubuntu7.11
Canonical apport=2.20.9-0ubuntu7.12
Canonical apport=2.20.9-0ubuntu7.13
Canonical apport=2.20.9-0ubuntu7.14
Canonical apport=2.20.9-0ubuntu7.15
Canonical apport=2.20.9-0ubuntu7.16
Canonical apport=2.20.9-0ubuntu7.17
Canonical apport=2.20.9-0ubuntu7.18
Canonical apport=2.20.9-0ubuntu7.19
Canonical apport=2.20.9-0ubuntu7.20
Canonical apport=2.20.9-0ubuntu7.21
Canonical apport=2.20.9-0ubuntu7.23
Canonical apport=2.20.9-0ubuntu7.24
All of the following
Canonical Ubuntu Linux=20.04
Any of the following
Canonical apport=2.20.11-0ubuntu8
Canonical apport=2.20.11-0ubuntu9
Canonical apport=2.20.11-0ubuntu10
Canonical apport=2.20.11-0ubuntu11
Canonical apport=2.20.11-0ubuntu12
Canonical apport=2.20.11-0ubuntu13
Canonical apport=2.20.11-0ubuntu14
Canonical apport=2.20.11-0ubuntu15
Canonical apport=2.20.11-0ubuntu16
Canonical apport=2.20.11-0ubuntu17
Canonical apport=2.20.11-0ubuntu18
Canonical apport=2.20.11-0ubuntu19
Canonical apport=2.20.11-0ubuntu20
Canonical apport=2.20.11-0ubuntu21
Canonical apport=2.20.11-0ubuntu22
Canonical apport=2.20.11-0ubuntu23
Canonical apport=2.20.11-0ubuntu24
Canonical apport=2.20.11-0ubuntu25
Canonical apport=2.20.11-0ubuntu26
Canonical apport=2.20.11-0ubuntu27
Canonical apport=2.20.11-0ubuntu27.2
Canonical apport=2.20.11-0ubuntu27.3
Canonical apport=2.20.11-0ubuntu27.4
Canonical apport=2.20.11-0ubuntu27.5
Canonical apport=2.20.11-0ubuntu27.6
Canonical apport=2.20.11-0ubuntu27.7
Canonical apport=2.20.11-0ubuntu27.8
Canonical apport=2.20.11-0ubuntu27.9
Canonical apport=2.20.11-0ubuntu27.10
Canonical apport=2.20.11-0ubuntu27.11
Canonical apport=2.20.11-0ubuntu27.12
Canonical apport=2.20.11-0ubuntu27.13
Canonical apport=2.20.11-0ubuntu27.14
Canonical apport=2.20.11-0ubuntu27.16
Canonical apport=2.20.11-0ubuntu27.17
Canonical apport=2.20.11-0ubuntu27.18
All of the following
Canonical Ubuntu Linux=21.04
Any of the following
Canonical apport=2.20.11-0ubuntu28
Canonical apport=2.20.11-0ubuntu29
Canonical apport=2.20.11-0ubuntu30
Canonical apport=2.20.11-0ubuntu31
Canonical apport=2.20.11-0ubuntu32
Canonical apport=2.20.11-0ubuntu33
Canonical apport=2.20.11-0ubuntu34
Canonical apport=2.20.11-0ubuntu35
Canonical apport=2.20.11-0ubuntu36
Canonical apport=2.20.11-0ubuntu37
Canonical apport=2.20.11-0ubuntu38
Canonical apport=2.20.11-0ubuntu39
Canonical apport=2.20.11-0ubuntu40
Canonical apport=2.20.11-0ubuntu41
Canonical apport=2.20.11-0ubuntu42
Canonical apport=2.20.11-0ubuntu43
Canonical apport=2.20.11-0ubuntu44
Canonical apport=2.20.11-0ubuntu45
Canonical apport=2.20.11-0ubuntu46
Canonical apport=2.20.11-0ubuntu47
Canonical apport=2.20.11-0ubuntu48
Canonical apport=2.20.11-0ubuntu49
Canonical apport=2.20.11-0ubuntu50
Canonical apport=2.20.11-0ubuntu50.1
Canonical apport=2.20.11-0ubuntu50.2
Canonical apport=2.20.11-0ubuntu50.3
Canonical apport=2.20.11-0ubuntu50.5
Canonical apport=2.20.11-0ubuntu50.7
Canonical apport=2.20.11-0ubuntu51
Canonical apport=2.20.11-0ubuntu52
Canonical apport=2.20.11-0ubuntu53
Canonical apport=2.20.11-0ubuntu54
Canonical apport=2.20.11-0ubuntu55
Canonical apport=2.20.11-0ubuntu56
Canonical apport=2.20.11-0ubuntu57
Canonical apport=2.20.11-0ubuntu58
Canonical apport=2.20.11-0ubuntu59
Canonical apport=2.20.11-0ubuntu60
Canonical apport=2.20.11-0ubuntu61
Canonical apport=2.20.11-0ubuntu62
Canonical apport=2.20.11-0ubuntu63
Canonical apport=2.20.11-0ubuntu64
Canonical apport=2.20.11-0ubuntu65
Canonical apport=2.20.11-0ubuntu65.1
Canonical apport=2.14.1-0ubuntu1
Canonical apport=2.14.1-0ubuntu2
Canonical apport=2.14.1-0ubuntu3
Canonical apport=2.14.1-0ubuntu3.1
Canonical apport=2.14.1-0ubuntu3.2
Canonical apport=2.14.1-0ubuntu3.3
Canonical apport=2.14.1-0ubuntu3.4
Canonical apport=2.14.1-0ubuntu3.5
Canonical apport=2.14.1-0ubuntu3.6
Canonical apport=2.14.1-0ubuntu3.7
Canonical apport=2.14.1-0ubuntu3.8
Canonical apport=2.14.1-0ubuntu3.9
Canonical apport=2.14.1-0ubuntu3.10
Canonical apport=2.14.1-0ubuntu3.11
Canonical apport=2.14.1-0ubuntu3.12
Canonical apport=2.14.1-0ubuntu3.13
Canonical apport=2.14.1-0ubuntu3.14
Canonical apport=2.14.1-0ubuntu3.15
Canonical apport=2.14.1-0ubuntu3.16
Canonical apport=2.14.1-0ubuntu3.17
Canonical apport=2.14.1-0ubuntu3.18
Canonical apport=2.14.1-0ubuntu3.19
Canonical apport=2.14.1-0ubuntu3.20
Canonical apport=2.14.1-0ubuntu3.21
Canonical apport=2.14.1-0ubuntu3.23
Canonical apport=2.14.1-0ubuntu3.24
Canonical apport=2.14.1-0ubuntu3.25
Canonical apport=2.14.1-0ubuntu3.27
Canonical apport=2.14.1-0ubuntu3.28
Canonical apport=2.14.1-0ubuntu3.29
Canonical apport=2.14.1-0ubuntu3.29\+esm7
Canonical Ubuntu Linux=14.04
Canonical apport=2.20.1-0ubuntu1
Canonical apport=2.20.1-0ubuntu2
Canonical apport=2.20.1-0ubuntu2.1
Canonical apport=2.20.1-0ubuntu2.2
Canonical apport=2.20.1-0ubuntu2.4
Canonical apport=2.20.1-0ubuntu2.5
Canonical apport=2.20.1-0ubuntu2.6
Canonical apport=2.20.1-0ubuntu2.7
Canonical apport=2.20.1-0ubuntu2.8
Canonical apport=2.20.1-0ubuntu2.9
Canonical apport=2.20.1-0ubuntu2.10
Canonical apport=2.20.1-0ubuntu2.12
Canonical apport=2.20.1-0ubuntu2.13
Canonical apport=2.20.1-0ubuntu2.14
Canonical apport=2.20.1-0ubuntu2.15
Canonical apport=2.20.1-0ubuntu2.16
Canonical apport=2.20.1-0ubuntu2.17
Canonical apport=2.20.1-0ubuntu2.18
Canonical apport=2.20.1-0ubuntu2.19
Canonical apport=2.20.1-0ubuntu2.20
Canonical apport=2.20.1-0ubuntu2.21
Canonical apport=2.20.1-0ubuntu2.22
Canonical apport=2.20.1-0ubuntu2.23
Canonical apport=2.20.1-0ubuntu2.25
Canonical apport=2.20.1-0ubuntu2.26
Canonical apport=2.20.1-0ubuntu2.27
Canonical apport=2.20.1-0ubuntu2.28
Canonical apport=2.20.1-0ubuntu2.30
Canonical apport=2.20.1-0ubuntu2.30\+esm1
Canonical Ubuntu Linux=16.04
Canonical apport=2.20.9-0ubuntu1
Canonical apport=2.20.9-0ubuntu2
Canonical apport=2.20.9-0ubuntu3
Canonical apport=2.20.9-0ubuntu4
Canonical apport=2.20.9-0ubuntu5
Canonical apport=2.20.9-0ubuntu6
Canonical apport=2.20.9-0ubuntu7
Canonical apport=2.20.9-0ubuntu7.1
Canonical apport=2.20.9-0ubuntu7.2
Canonical apport=2.20.9-0ubuntu7.3
Canonical apport=2.20.9-0ubuntu7.4
Canonical apport=2.20.9-0ubuntu7.5
Canonical apport=2.20.9-0ubuntu7.6
Canonical apport=2.20.9-0ubuntu7.7
Canonical apport=2.20.9-0ubuntu7.8
Canonical apport=2.20.9-0ubuntu7.9
Canonical apport=2.20.9-0ubuntu7.10
Canonical apport=2.20.9-0ubuntu7.11
Canonical apport=2.20.9-0ubuntu7.12
Canonical apport=2.20.9-0ubuntu7.13
Canonical apport=2.20.9-0ubuntu7.14
Canonical apport=2.20.9-0ubuntu7.15
Canonical apport=2.20.9-0ubuntu7.16
Canonical apport=2.20.9-0ubuntu7.17
Canonical apport=2.20.9-0ubuntu7.18
Canonical apport=2.20.9-0ubuntu7.19
Canonical apport=2.20.9-0ubuntu7.20
Canonical apport=2.20.9-0ubuntu7.21
Canonical apport=2.20.9-0ubuntu7.23
Canonical apport=2.20.9-0ubuntu7.24
Canonical Ubuntu Linux=18.04
Canonical apport=2.20.11-0ubuntu8
Canonical apport=2.20.11-0ubuntu9
Canonical apport=2.20.11-0ubuntu10
Canonical apport=2.20.11-0ubuntu11
Canonical apport=2.20.11-0ubuntu12
Canonical apport=2.20.11-0ubuntu13
Canonical apport=2.20.11-0ubuntu14
Canonical apport=2.20.11-0ubuntu15
Canonical apport=2.20.11-0ubuntu16
Canonical apport=2.20.11-0ubuntu17
Canonical apport=2.20.11-0ubuntu18
Canonical apport=2.20.11-0ubuntu19
Canonical apport=2.20.11-0ubuntu20
Canonical apport=2.20.11-0ubuntu21
Canonical apport=2.20.11-0ubuntu22
Canonical apport=2.20.11-0ubuntu23
Canonical apport=2.20.11-0ubuntu24
Canonical apport=2.20.11-0ubuntu25
Canonical apport=2.20.11-0ubuntu26
Canonical apport=2.20.11-0ubuntu27
Canonical apport=2.20.11-0ubuntu27.2
Canonical apport=2.20.11-0ubuntu27.3
Canonical apport=2.20.11-0ubuntu27.4
Canonical apport=2.20.11-0ubuntu27.5
Canonical apport=2.20.11-0ubuntu27.6
Canonical apport=2.20.11-0ubuntu27.7
Canonical apport=2.20.11-0ubuntu27.8
Canonical apport=2.20.11-0ubuntu27.9
Canonical apport=2.20.11-0ubuntu27.10
Canonical apport=2.20.11-0ubuntu27.11
Canonical apport=2.20.11-0ubuntu27.12
Canonical apport=2.20.11-0ubuntu27.13
Canonical apport=2.20.11-0ubuntu27.14
Canonical apport=2.20.11-0ubuntu27.16
Canonical apport=2.20.11-0ubuntu27.17
Canonical apport=2.20.11-0ubuntu27.18
Canonical Ubuntu Linux=20.04
Canonical apport=2.20.11-0ubuntu28
Canonical apport=2.20.11-0ubuntu29
Canonical apport=2.20.11-0ubuntu30
Canonical apport=2.20.11-0ubuntu31
Canonical apport=2.20.11-0ubuntu32
Canonical apport=2.20.11-0ubuntu33
Canonical apport=2.20.11-0ubuntu34
Canonical apport=2.20.11-0ubuntu35
Canonical apport=2.20.11-0ubuntu36
Canonical apport=2.20.11-0ubuntu37
Canonical apport=2.20.11-0ubuntu38
Canonical apport=2.20.11-0ubuntu39
Canonical apport=2.20.11-0ubuntu40
Canonical apport=2.20.11-0ubuntu41
Canonical apport=2.20.11-0ubuntu42
Canonical apport=2.20.11-0ubuntu43
Canonical apport=2.20.11-0ubuntu44
Canonical apport=2.20.11-0ubuntu45
Canonical apport=2.20.11-0ubuntu46
Canonical apport=2.20.11-0ubuntu47
Canonical apport=2.20.11-0ubuntu48
Canonical apport=2.20.11-0ubuntu49
Canonical apport=2.20.11-0ubuntu50
Canonical apport=2.20.11-0ubuntu50.1
Canonical apport=2.20.11-0ubuntu50.2
Canonical apport=2.20.11-0ubuntu50.3
Canonical apport=2.20.11-0ubuntu50.5
Canonical apport=2.20.11-0ubuntu50.7
Canonical apport=2.20.11-0ubuntu51
Canonical apport=2.20.11-0ubuntu52
Canonical apport=2.20.11-0ubuntu53
Canonical apport=2.20.11-0ubuntu54
Canonical apport=2.20.11-0ubuntu55
Canonical apport=2.20.11-0ubuntu56
Canonical apport=2.20.11-0ubuntu57
Canonical apport=2.20.11-0ubuntu58
Canonical apport=2.20.11-0ubuntu59
Canonical apport=2.20.11-0ubuntu60
Canonical apport=2.20.11-0ubuntu61
Canonical apport=2.20.11-0ubuntu62
Canonical apport=2.20.11-0ubuntu63
Canonical apport=2.20.11-0ubuntu64
Canonical apport=2.20.11-0ubuntu65
Canonical apport=2.20.11-0ubuntu65.1
Canonical Ubuntu Linux=21.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade apport to a version that resolves this vulnerability.

    Fixed in 2.14.1-0ubuntu3.29+esm8
  2. Upgrade

    Upgrade apport to a version that resolves this vulnerability.

    Fixed in 2.20.1-0ubuntu2.30+esm2
  3. Upgrade

    Upgrade apport to a version that resolves this vulnerability.

    Fixed in 2.20.9-0ubuntu7.26
  4. Upgrade

    Upgrade apport to a version that resolves this vulnerability.

    Fixed in 2.20.11-0ubuntu27.20
  5. Upgrade

    Upgrade apport to a version that resolves this vulnerability.

    Fixed in 2.20.11-0ubuntu65.3

Event History

Oct 1, 2021
CVE Published
via MITRE·02:35 AM
Data Sourced
via MITRE·02:35 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·03:15 AM
DescriptionSeverityWeaknessAffected Software
Aug 3, 2024
Data Sourced
via Debian·05:10 PM
DescriptionAffected Software
Data Sourced
via Launchpad·05:10 PM
Description
Feb 24, 2026
Data Sourced
via Ubuntu·09:17 PM
RemedyDescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2021-3709?

The severity of CVE-2021-3709 is rated as medium with a CVSS score of 5.5.

2

How can I fix CVE-2021-3709 vulnerability in apport package for Ubuntu?

You can fix the CVE-2021-3709 vulnerability in the apport package by updating to version 2.20.11-0ubuntu69 if you are on 'impish' or 'jammy' release, version 2.20.9-0ubuntu7.26 if you are on 'bionic' release, version 2.20.11-0ubuntu27.20 if you are on 'focal' release, version 2.20.11-0ubuntu65.3 if you are on 'hirsute' release, or version 2.14.1-0ubuntu3.29+ if you are on 'trusty' release, version 2.20.1-0ubuntu2.30+ if you are on 'xenial' release.

3

What software versions are affected by CVE-2021-3709?

The apport package versions affected by CVE-2021-3709 include 2.14.1-0ubuntu1 to 2.14.1-0ubuntu3.29, 2.20.1-0ubuntu1 to 2.20.1-0ubuntu2.30, and 2.20.9-0ubuntu1 to 2.20.9-0ubuntu7.

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