Red Hat Ansible
At a glance
- Source
- NVD
- EPSS
- EPSS 0.40 % · percentile 35 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
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'.
Weaknesses (CWE)
- CWE-377 — DEPRECATED: Insecure Temporary File
- CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization
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%40lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S/
- https://lists.debian.org/debian-lts-announce/2020/05/msg00005.html
- https://security.gentoo.org/glsa/202006-11
- https://www.debian.org/security/2021/dsa-4950
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L | redhat |
| CVSS 3.1 | MEDIUM 5.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 3.7 | AV:L/AC:H/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-g4mq-6fp5-qwcf — Ansible vulnerable to Exposure of Resource to Wrong Sphere and Insecure Temporary File
- PYSEC-2020-5 — 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. W
European references
- ENISA EUVD · EUVD-2020-0027
- GCVE · GCVE-0-2020-1733
Affected configurations (NVD CPE)
cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*≤ 2.7.16cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*≥ 2.8.0 < 2.8.8cpe:2.3:a:redhat:ansible:*:*:*:*:*:*:*:*≥ 2.9.0 ≤ 2.9.5cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:*≤ 3.3.4cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:*≥ 3.3.5 ≤ 3.4.5cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:*≥ 3.5.0 ≤ 3.5.5cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:*≥ 3.6.0 ≤ 3.6.3cpe:2.3:a:redhat:cloudforms_management_engine:5.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Red Hat · Ansible | affected 2.7.17 and prior ; affected 2.8.9 and prior ; affected 2.9.6 and prior |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |