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'.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1733 | Issue Tracking Vendor Advisory |
https://github.com/ansible/ansible/issues/67791 | Exploit Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW/ | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB/ | Mailing List Third Party Advisory |
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S/ | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2020/05/msg00005.html | Mailing List Third Party Advisory |
https://security.gentoo.org/glsa/202006-11 | Third Party Advisory |
https://www.debian.org/security/2021/dsa-4950 | Third Party Advisory |
Configurations
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Configuration 2 (hide)
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Information
Published : 2020-03-11 12:15
Updated : 2022-04-25 10:37
NVD link : CVE-2020-1733
Mitre link : CVE-2020-1733
JSON object : View
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Products Affected
redhat
- openstack
- ansible
- ansible_tower
- cloudforms_management_engine
fedoraproject
- fedora
debian
- debian_linux