CVE-2020-17518Not scoredCWE-23

CVE-2020-17518: Apache Flink directory traversal attack: remote file writing through the REST API

Apache Software Foundation · Apache Flink

Affected: Apache Software Foundation Apache Flink · Exploitation: check available, not yet exploited

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

49.4%probability of exploitation in the next 30 days

98th percentile

050100

Higher than 98% of scored CVEs

Not scored yet. The CVE record carries no CVSS score.

DescriptionCVE.org

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 products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Apache Software Foundation · Apache FlinkApache Flink 1.5.1 to 1.11.2

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
CISA KEV: Not listed
Public check: Apache Flink 1.5.1 - Local File Inclusion · nuclei template in projectdiscovery/nuclei-templates
Weakness: Relative Path Traversal · File and Path Handling
Vendor: Apache Software Foundation
Published: January 2021
Band: Check available, not yet exploited, January 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2020-17518 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

12 more references are in the CVE record.