CVE-2020-17526

Description

Incorrect Session Validation in Apache Airflow Webserver versions prior to 1.10.14 with default config allows a malicious airflow user on site A where they log in normally, to access unauthorized Airflow Webserver on Site B through the session from Site A. This does not affect users who have changed the default value for `[webserver] secret_key` config.

Remediation

Workaround:

Change the default value for `[webserver] secret_key` config.

7.7

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 91.00% Top 5%

Vendor Advisory apache.org

Affected: Apache Software Foundation Apache Airflow

References

Link	Tags
https://lists.apache.org/thread.html/rbeeb73a6c741f2f9200d83b9c2220610da314810c4e8c9cf881d47ef%40%3Cusers.airflow.apache.org%3E	mailing list vendor advisory
http://www.openwall.com/lists/oss-security/2020/12/21/1	third party advisory mailing list
https://lists.apache.org/thread.html/r466759f377651f0a690475d5a52564d0e786e82c08d5a5730a4f8352%40%3Cannounce.apache.org%3E	mailing list

Frequently Asked Questions

What is the severity of CVE-2020-17526?: CVE-2020-17526 has been scored as a high severity vulnerability.
How to fix CVE-2020-17526?: As a workaround for remediating CVE-2020-17526: Change the default value for `[webserver] secret_key` config.
Is CVE-2020-17526 being actively exploited in the wild?: It is possible that CVE-2020-17526 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~91% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-17526?: CVE-2020-17526 affects Apache Software Foundation Apache Airflow.

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