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GHSA-7q5g-gph2-4rc6

Upload of file to arbitrary path in Apache Flink

Source: GitHub Advisory Database (reviewed) High CVE-2020-17518

Packages

EcosystemPackageAffectedFixed in
Maven org.apache.flink:flink-runtime >= 1.5.1, < 1.11.3 1.11.3

Details

As written in the advisory (Markdown source, shown as plain text).

Apache Flink 1.5.1 introduced a REST handler that allows you to write an uploaded file to an arbitrary location on the local file system, through a maliciously modified HTTP HEADER. The files can be written to any location accessible by Flink 1.5.1. 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 a5264a6f41524afe8ceadf1d8ddc8c80f323ebc4 from apache/flink:master.

References

External links from the advisory. They lead to third-party sites.