Vulnerability Monitor

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CVE-2020-1733

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'.

Published

2020-03-11T19:15:13.030

Last Modified

2024-11-21T05:11:16.020

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.0 (MEDIUM)

CVSSv2 Vector

AV:L/AC:H/Au:N/C:P/I:P/A:P

  • Access Vector: LOCAL
  • Access Complexity: HIGH
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

1.9

Impact Score

6.4

Weaknesses
  • Type: Secondary
    CWE-377
  • Type: Primary
    CWE-362
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application redhat ansible ≤ 2.7.16 Yes
Application redhat ansible < 2.8.8 Yes
Application redhat ansible ≤ 2.9.5 Yes
Application redhat ansible_tower ≤ 3.3.4 Yes
Application redhat ansible_tower ≤ 3.4.5 Yes
Application redhat ansible_tower ≤ 3.5.5 Yes
Application redhat ansible_tower ≤ 3.6.3 Yes
Application redhat cloudforms_management_engine 5.0 Yes
Application redhat openstack 13 Yes
Operating System fedoraproject fedora 30 Yes
Operating System fedoraproject fedora 31 Yes
Operating System fedoraproject fedora 32 Yes
Operating System debian debian_linux 8.0 Yes
Operating System debian debian_linux 10.0 Yes
References