Ansible vulnerable to Exposure of Resource to Wrong Sphere and Insecure Temporary File
A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with "umask 77 && mkdir -p <dir>"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc/<pid>/cmdline'.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | ansible | < 2.7.17, >= 2.8.0a1, < 2.8.11, >= 2.9.0a1, < 2.9.7 | 2.7.17, 2.8.11, 2.9.7 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1733
- https://github.com/ansible/ansible/issues/67791
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S/
- https://lists.debian.org/debian-lts-announce/2020/05/msg00005.html
- https://security.gentoo.org/glsa/202006-11
- https://github.com/advisories/GHSA-g4mq-6fp5-qwcf
- https://nvd.nist.gov/vuln/detail/CVE-2020-1733
- https://github.com/ansible/ansible/commit/80b9a0a25c5f75e84aefc8f2b293fb1933b154f2
- https://github.com/ansible/ansible/commit/8251d9f4c2bc82632ab992277fcd30ccbf87aa47
- https://github.com/ansible/ansible/commit/ecf99d5e1ff732a7777010facd6c98bb0994605e
- https://github.com/ansible/ansible
- https://github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2020-5.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB
- https://www.debian.org/security/2021/dsa-4950
- CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L- Weakness (CWE)
CWE-362, CWE-377, CWE-668- Platform
- Python (PyPI)
- Package
ansible- Disclosed
- 11.03.2020
- Updated
- 11.10.2026 12:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2020-5 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-g4mq-6fp5-qwcf - CC BY 4.0
Vulnerability history: ansible
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 68
- First → latest
- 09.2013 12.2025
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Critical 9
- High 24
- Medium 27
- Low 6
- Unrated 2
Disclosures per year
- 2017: 3
- 2018: 12
- 2019: 8
- 2020: 29
- 2021: 7
- 2022: 3
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 0
earlier: 4
-
Ansible vulnerable to Exposure of Resource to Wrong Sphere and Insecure Temporary File this entry
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.