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'.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.0, requiring local system access to exploit but requires specific conditions to be met though user interaction is required requiring only low-level privileges . The vulnerability impacts limited data confidentiality, limited integrity, and limited availability for affected systems. Impacting 6 products from redhat, from redhat, from redhat and 3 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


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

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For redhat's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.