NetSight
IP …
medium5.0

CVE-2020-1733

Ansible vulnerable to Exposure of Resource to Wrong Sphere and Insecure Temporary File

Impact

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 packages

EcosystemPackageAffectedFixed in
pipansible>= 0, < 2.7.172.7.17

Affected products

VendorProductAffected versions
RedhatAnsible
through 2.7.16
from 2.8.0 before 2.8.8
from 2.9.0 through 2.9.5
RedhatAnsible Tower
through 3.3.4
from 3.3.5 through 3.4.5
from 3.5.0 through 3.5.5
from 3.6.0 through 3.6.3
RedhatCloudforms Management Engine
Version 5.0
RedhatOpenstack
Version 13
FedoraprojectFedora
Versions 30, 31, 32
DebianDebian Linux
Versions 8.0, 10.0

Weakness classification

CWE-377CWE-362CWE-668

References