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TI-2021-03545 Aliases CVE-2021-20253GHSA-rr45-4xhx-rxc8

A flaw was found in ansible-tower.

Priority LOW 30CWE-552Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 3 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-552.

Summary

A flaw was found in ansible-tower. The default installation is vulnerable to Job Isolation escape allowing an attacker to elevate the privilege from a low privileged user to the awx user from outside the isolated environment. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Why it matters now

EPSS 0.00411 35th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 3 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—ansible-toweransible-tower 3.8.2, ansible-tower 3.7.5, ansible-tower 3.6.7—No fix listedCNA
  • ansible-tower Vendor— Affected ansible-tower 3.8.2, ansible-tower 3.7.5, ansible-tower 3.6.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:*before 3.6.7; 3.7.0 to before 3.7.5; 3.8.0 to before 3.8.2VulnerableRed Hat
  • cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:* Versions before 3.6.7; 3.7.0 to before 3.7.5; 3.8.0 to before 3.8.2 Vulnerable ·Red Hat

Remediation

Red Hat 3 advisories

  • RHSA-2021:0780 Released 2021-03-09 · Red Hat rating Important
    Red Hat Ansible Tower 3.8.2-1 - Container security and bug fix update
    • Red Hat Ansible Tower 3.8 for RHEL 7 ansible-tower-38/ansible-runner-rhel7, ansible-tower-38/ansible-tower-rhel7
  • RHSA-2021:0778 Released 2021-03-09 · Red Hat rating Important
    Red Hat Ansible Tower 3.6.7-1 - Container security and bug fix update
    • Red Hat Ansible Tower 3.6 for RHEL 7 ansible-tower-36/ansible-tower
  • RHSA-2021:0779 Released 2021-03-09 · Red Hat rating Important
    Red Hat Ansible Tower 3.7.5-1 - Container security and bug fix update
    • Red Hat Ansible Tower 3.7 for RHEL 7 ansible-tower-37/ansible-tower-rhel7

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 1.2AffectedNo fix yet
Red Hat Ansible Tower 3.6 for RHEL 7Fixed RHSA-2021:0778
Red Hat Ansible Tower 3.7 for RHEL 7Fixed RHSA-2021:0779
Red Hat Ansible Tower 3.8 for RHEL 7Fixed RHSA-2021:0780

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20253
  2. 2026-10-03 Alias added: GHSA-rr45-4xhx-rxc8

References

Advisory 1

  • TI-2018-12447 Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2… CVSS 3.0CRITICAL 9.8
  • TI-2015-07641 _XcursorThemeInherits in library.c in libXcursor before 1.1.15 allows remote attackers to… CVSS 3.0CRITICAL 9.8
  • TI-2018-09275 The get_cookies function in soup-cookie-jar.c in libsoup 2.63.2 allows attackers to have… CVSS 3.0CRITICAL 9.8
  • TI-2018-00980 Improper input validation in [UNKNOWN] python CVSS 3.1HIGH 7.5
  • TI-2018-16030 Paramiko version 2.4.1, 2.3.2, 2.2.3, 2.1.5, 2.0.8, 1.18.5, 1.17.6 contains a Incorrect… CVSS 3.1HIGH 8.8
  • TI-2018-10539 An issue was discovered in kwajd_read_headers in mspack/kwajd.c in libmspack before… CVSS 3.0HIGH 8.8
See all 63 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences