CVE-2020-17519: Apache Flink Improper Access Control Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

Apache Flink contains an improper access control vulnerability that allows an attacker to read any file on the local filesystem of the JobManager through its REST interface.

Required action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://lists.apache.org/thread/typ0h03zyfrzjqlnb7plh64df1g2383d; https://nvd.nist.gov/vuln/detail/CVE-2020-17519

Weakness behind it

CISA records this vulnerability as an instance of CWE-552. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-17519
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog