CVE-2020-1734
Vulnerability Summary
Timeline
Description
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.
CVSS Metrics
- v4.0•HIGH•Score: 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
- v3.1•HIGH•Score: 7.4CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
- v2.0•LOW•Score: 3.7AV:L/AC:H/Au:N/C:P/I:P/A:P
EPSS Trends
Current EPSS score: 0.08%• Percentile: 24%
Techniques & Countermeasures
- CWE-78•Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Affected Systems
- PyPI•ansible
≥ 2.10.0a1, < 2.10.0rc1 | ≥ 2.9.0a1, < 2.9.11 | < 2.8.13 | < 2.7.17
- red hat•ansible
n/a
- redhat•ansible_engine
≤ 2.7.16 | 2.8.8 | 2.9.5
- redhat•ansible_tower
≤ 3.3.4 | 3.4.5 | 3.5.5 | 3.6.3
References (16)
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1734
- https://github.com/ansible/ansible/issues/67792
- https://nvd.nist.gov/vuln/detail/CVE-2020-1734
- https://github.com/ansible/ansible/issues/70159
- https://github.com/ansible/ansible/pull/70596
- https://github.com/ansible/ansible/commit/4f978af4ca16ad9828ffe42203b9615425195f8b
- https://github.com/ansible/ansible/commit/963bdd9983b91a48fb6949fb2ef41071e72d0be0
- https://github.com/ansible/ansible/commit/bff0724e9eab2770f874e018298f9ab74cc2a78f
- https://github.com/ansible/ansible/commit/e5649ca3e807f17e7c034ee22791f107162973b0
- https://access.redhat.com/errata/RHBA-2020:0547
- https://access.redhat.com/errata/RHBA-2020:1539
- https://access.redhat.com/security/cve/CVE-2020-1734
- https://bugzilla.redhat.com/show_bug.cgi?id=1801804
- https://github.com/advisories/GHSA-h39q-95q5-9jfp
- https://github.com/ansible/ansible
- https://github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2020-6.yaml