CVE-2020-17518

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.

Affected products

Apache Flink

Apache Flink

< 1.11.3

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

50.0% (99th percentile)

Weakness

CWE-23, CWE-22

NVD status

Modified

Published

2021-01-05