6.7
MEDIUM
CVE-2021-20253
Ansible-Tower Privilege Escalation Vulnerability
Description

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.

INFO

Published Date :

March 9, 2021, 6:15 p.m.

Last Modified :

June 2, 2021, 4:35 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Public PoC/Exploit Available at Github

CVE-2021-20253 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-20253 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat ansible_tower
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20253.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1928847 Issue Tracking Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

CVE-2021-20253: Privilege Escalation via Job Isolation Escape in Ansible Tower

0-day cve cves local-privilege-escalation cve-2021-20253

Updated: 9 months, 3 weeks ago
1 stars 0 fork 0 watcher
Born at : Nov. 25, 2023, 6:56 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20253 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20253 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Jun. 02, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Removed CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:L/AC:H/Au:S/C:P/I:P/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Mar. 15, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1928847 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1928847 Issue Tracking, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:* versions up to (excluding) 3.6.7 *cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:* versions from (including) 3.7.0 up to (excluding) 3.7.5 *cpe:2.3:a:redhat:ansible_tower:*:*:*:*:*:*:*:* versions from (including) 3.8.0 up to (excluding) 3.8.2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20253 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-20253 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10264

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability