UBUNTU-CVE-2021-32804

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2021-32804
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-32804.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-32804
Related
Published
2021-08-03T19:15:00Z
Modified
2021-08-03T19:15:00Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
Summary
[none]
Details

The npm package "tar" (aka node-tar) before versions 6.1.1, 5.0.6, 4.4.14, and 3.3.2 has a arbitrary File Creation/Overwrite vulnerability due to insufficient absolute path sanitization. node-tar aims to prevent extraction of absolute file paths by turning absolute paths into relative paths when the preservePaths flag is not set to true. This is achieved by stripping the absolute path root from any absolute file paths contained in a tar file. For example /home/user/.bashrc would turn into home/user/.bashrc. This logic was insufficient when file paths contained repeated path roots such as ////home/user/.bashrc. node-tar would only strip a single path root from such paths. When given an absolute file path with repeating path roots, the resulting path (e.g. ///home/user/.bashrc) would still resolve to an absolute path, thus allowing arbitrary file creation and overwrite. This issue was addressed in releases 3.2.2, 4.4.14, 5.0.6 and 6.1.1. Users may work around this vulnerability without upgrading by creating a custom onentry method which sanitizes the entry.path or a filter method which removes entries with absolute paths. See referenced GitHub Advisory for details. Be aware of CVE-2021-32803 which fixes a similar bug in later versions of tar.

References

Affected packages

Ubuntu:Pro:14.04:LTS / node-tar

Package

Name
node-tar

Affected ranges

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

Affected versions

0.*

0.1.18-1
0.1.18-1ubuntu0.1~esm1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:16.04:LTS / node-tar

Package

Name
node-tar

Affected ranges

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

Affected versions

1.*

1.0.3-2
1.0.3-2ubuntu0.1~esm1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / node-tar

Package

Name
node-tar

Affected ranges

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

Affected versions

2.*

2.2.1-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / node-tar

Package

Name
node-tar

Affected ranges

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

Affected versions

4.*

4.4.10+ds1-2
4.4.10+ds1-2ubuntu1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:22.04:LTS / node-tar

Package

Name
node-tar

Affected ranges

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

Affected versions

6.*

6.1.7+~cs11.3.10-1
6.1.11+~cs11.3.10-1
6.1.11+ds1+~cs6.0.6-1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:24.04:LTS / node-tar

Package

Name
node-tar

Affected ranges

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

Affected versions

6.*

6.1.13+~cs7.0.5-1
6.1.13+~cs7.0.5-3

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}