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  5. CVE-2020-1734

CVE-2020-1734: OS Command Injection in ansible

February 9, 2022 (updated September 10, 2024)

A flaw was found in the pipe lookup plugin of ansible. Arbitrary commands can be run, when the pipe lookup plugin uses subprocess.Popen() with shell=True, by overwriting ansible facts and the variable is not escaped by quote plugin. An attacker could take advantage and run arbitrary commands by overwriting the ansible facts.

References

  • access.redhat.com/errata/RHBA-2020:0547
  • access.redhat.com/errata/RHBA-2020:1539
  • access.redhat.com/security/cve/CVE-2020-1734
  • bugzilla.redhat.com/show_bug.cgi?id=1801804
  • bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1734
  • github.com/advisories/GHSA-h39q-95q5-9jfp
  • github.com/ansible/ansible
  • github.com/ansible/ansible/commit/4f978af4ca16ad9828ffe42203b9615425195f8b
  • github.com/ansible/ansible/commit/963bdd9983b91a48fb6949fb2ef41071e72d0be0
  • github.com/ansible/ansible/commit/bff0724e9eab2770f874e018298f9ab74cc2a78f
  • github.com/ansible/ansible/commit/e5649ca3e807f17e7c034ee22791f107162973b0
  • github.com/ansible/ansible/issues/67792
  • github.com/ansible/ansible/issues/70159
  • github.com/ansible/ansible/pull/70596
  • github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2020-6.yaml
  • nvd.nist.gov/vuln/detail/CVE-2020-1734

Code Behaviors & Features

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Affected versions

All versions starting from 2.10.0a1 before 2.10.0rc1, all versions starting from 2.9.0a1 before 2.9.11, all versions before 2.8.13

Fixed versions

  • 2.10.0rc1
  • 2.9.11
  • 2.8.13

Solution

Upgrade to versions 2.10.0rc1, 2.8.13, 2.9.11 or above.

Impact 7.4 HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L

Learn more about CVSS

Weakness

  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Source file

pypi/ansible/CVE-2020-1734.yml

Spotted a mistake? Edit the file on GitLab.

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