Vulnerability Details : CVE-2020-13927
Public exploit exists!
The previous default setting for Airflow's Experimental API was to allow all API requests without authentication, but this poses security risks to users who miss this fact. From Airflow 1.10.11 the default has been changed to deny all requests by default and is documented at https://airflow.apache.org/docs/1.10.11/security.html#api-authentication. Note this change fixes it for new installs but existing users need to change their config to default `[api]auth_backend = airflow.api.auth.backend.deny_all` as mentioned in the Updating Guide: https://github.com/apache/airflow/blob/1.10.11/UPDATING.md#experimental-api-will-deny-all-request-by-default
CVE-2020-13927 is in the CISA Known Exploited Vulnerabilities Catalog
CISA vulnerability name:
Apache Airflow's Experimental API Authentication Bypass
CISA required action:
Apply updates per vendor instructions.
CISA description:
The previous default setting for Airflow's Experimental API was to allow all API requests without authentication.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2020-13927
Added on
2022-01-18
Action due date
2022-07-18
Exploit prediction scoring system (EPSS) score for CVE-2020-13927
96.65%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 100 %
Percentile, the proportion of vulnerabilities that are scored at or less
Metasploit modules for CVE-2020-13927
-
Apache Airflow 1.10.10 - Example DAG Remote Code Execution
Disclosure Date: 2020-07-14First seen: 2023-10-08exploit/linux/http/apache_airflow_dag_rceThis module exploits an unauthenticated command injection vulnerability by combining two critical vulnerabilities in Apache Airflow 1.10.10. The first, CVE-2020-11978, is an authenticated command injection vulnerability found in one of Airflow's example DAGs,
CVSS scores for CVE-2020-13927
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-08-01 |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-13927
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
-
A named-callable or method control element has a signature that supports a variable (variadic) number of parameters or arguments.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
-
The product initializes or sets a resource with a default that is intended to be changed by the administrator, but the default is not secure.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2020-13927
-
https://lists.apache.org/thread.html/r23a81b247aa346ff193670be565b2b8ea4b17ddbc7a35fc099c1aadd%40%3Cdev.airflow.apache.org%3E
Pony Mail!Mailing List;Vendor Advisory
-
http://packetstormsecurity.com/files/174764/Apache-Airflow-1.10.10-Remote-Code-Execution.html
Apache Airflow 1.10.10 Remote Code Execution ≈ Packet StormExploit;Third Party Advisory;VDB Entry
-
http://packetstormsecurity.com/files/162908/Apache-Airflow-1.10.10-Remote-Code-Execution.html
Apache Airflow 1.10.10 Remote Code Execution ≈ Packet StormExploit;Third Party Advisory;VDB Entry
Products affected by CVE-2020-13927
- cpe:2.3:a:apache:airflow:*:*:*:*:*:*:*:*