// For flags

CVE-2021-20253

ansible-tower: Privilege escalation via job isolation escape

Severity Score

6.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se encontró un fallo en ansible-tower. La instalación predeterminada es vulnerable al escape de Job Isolation, permitiendo a un atacante elevar el privilegio de un usuario poco privilegiado al usuario awx desde fuera del entorno aislado. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, así como la disponibilidad del sistema

Red Hat Ansible Tower 3.6.7-1 has a security and bug fix update. Issues addressed include HTTP request smuggling, code execution, cross site scripting, and privilege escalation vulnerabilities.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-17 CVE Reserved
  • 2021-03-09 CVE Published
  • 2023-11-25 First Exploit
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-552: Files or Directories Accessible to External Parties
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
 Ansible Tower
Search vendor "Redhat" for product "Ansible Tower"
 < 3.6.7
Search vendor "Redhat" for product "Ansible Tower" and version " < 3.6.7"
-
Affected
Redhat
Search vendor "Redhat"
 Ansible Tower
Search vendor "Redhat" for product "Ansible Tower"
 >= 3.7.0 < 3.7.5
Search vendor "Redhat" for product "Ansible Tower" and version " >= 3.7.0 < 3.7.5"
-
Affected
Redhat
Search vendor "Redhat"
 Ansible Tower
Search vendor "Redhat" for product "Ansible Tower"
 >= 3.8.0 < 3.8.2
Search vendor "Redhat" for product "Ansible Tower" and version " >= 3.8.0 < 3.8.2"
-
Affected