UBUNTU-CVE-2022-21682

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2022-21682
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-21682.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2022-21682
Related
Published
2022-01-13T21:15:00Z
Modified
2022-01-13T21:15:00Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies finish-args last in the build. At this point the build directory will have the full access that is specified in the manifest, so running flatpak build against it will gain those permissions. Normally this will not be done, so this is not problem. However, if --mirror-screenshots-url is specified, then flatpak-builder will launch flatpak build --nofilesystem=host appstream-utils mirror-screenshots after finalization, which can lead to issues even with the --nofilesystem=host protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the appstream-util binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of --nofilesystem=home and --nofilesystem=host.

References

Affected packages

Ubuntu:Pro:18.04:LTS / flatpak

Package

Name
flatpak

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.8.7-5
0.10.0-1
0.10.0-2
0.10.1-1
0.10.2-1
0.10.2.1-1
0.10.2.1-2
0.10.3-1
0.11.1-0ubuntu1
0.11.3-2
0.11.3-3
0.11.7-0ubuntu0.1

1.*

1.0.1-0ubuntu0.1
1.0.6-0ubuntu0.1
1.0.7-0ubuntu0.18.04.1
1.0.8-0ubuntu0.18.04.1
1.0.9-0ubuntu0.1
1.0.9-0ubuntu0.2
1.0.9-0ubuntu0.3
1.0.9-0ubuntu0.4

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:20.04:LTS / flatpak

Package

Name
flatpak

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.4.3-1
1.6.0-1
1.6.1-1
1.6.2-1
1.6.3-1
1.6.5-0ubuntu0.1
1.6.5-0ubuntu0.2
1.6.5-0ubuntu0.3
1.6.5-0ubuntu0.4

Ecosystem specific 

{
    "ubuntu_priority": "low"
}

Ubuntu:22.04:LTS / flatpak

Package

Name
flatpak

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.10.2-3
1.12.2-1
1.12.2-2
1.12.3-1
1.12.4-1
1.12.5-1
1.12.6-1
1.12.7-1

Ecosystem specific 

{
    "ubuntu_priority": "low"
}