Path Traversal in Apache Flink

A change introduced in Apache Flink 1.11.0 (and released in 1.11.1 and 1.11.2 as well) allows attackers to read any file on the local filesystem of the JobManager through the REST interface of the JobManager process. Access is restricted to files accessible by the JobManager process. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in commit b561010b0ee741543c3953306037f00d7a9f0801 from apache/flink:master.

Vulnerability ID: GHSA-395w-qhqr-9fr6
Aliases: CVE-2020-17519
Published: 2021-01-06 20:01:34
CWE: CWE-22
CWE-552
Severity rating: MODERATE
Affected packages:
package: ecosystem: Maven
name: org.apache.flink:flink-runtime_2.11
package: ecosystem: Maven
name: org.apache.flink:flink-runtime_2.12