9.1
Critical
Exploited
CVE-2020-17519 Apache Flink Improper Access Control Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Not observed so far
Weakness
CWE-552
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Flink | Versions not published | |
| flink 1.11 | 1.11.0 → 1.11.2 | No fix stated |
References
- lists.apache.org lists.apache.org
- [flink-user] 20210105 [CVE-2020-17519] Apache Flink directory traversal attack: reading remote files through the REST API lists.apache.org
- [announce] 20210105 [CVE-2020-17519] Apache Flink directory traversal attack: reading remote files through the REST API lists.apache.org
- [oss-security] 20210105 [CVE-2020-17519] Apache Flink directory traversal attack: reading remote files through the REST API www.openwall.com
- [flink-issues] 20210106 [GitHub] [flink-web] zentol commented on a change in pull request #408: Add security page for Flink lists.apache.org
- packetstormsecurity.com packetstormsecurity.com
- [flink-issues] 20210110 [jira] [Updated] (FLINK-20916) Typo in test for CVE-2020-17519 lists.apache.org
- [flink-dev] 20210110 [jira] [Created] (FLINK-20916) Typo in test for CVE-2020-17519 lists.apache.org
- [flink-issues] 20210110 [jira] [Created] (FLINK-20916) Typo in test for CVE-2020-17519 lists.apache.org
- [flink-issues] 20210111 [jira] [Assigned] (FLINK-20916) Typo in test for CVE-2020-17519 lists.apache.org
- [flink-issues] 20210111 [jira] [Commented] (FLINK-20916) Typo in test for CVE-2020-17519 lists.apache.org
- [flink-dev] 20210113 Re: [DISCUSS] Releasing Apache Flink 1.10.3 lists.apache.org
- [flink-dev] 20210115 Re: [DISCUSS] Releasing Apache Flink 1.10.3 lists.apache.org
- [announce] 20210125 Apache Software Foundation Security Report: 2020 lists.apache.org
- [announce] 20210223 Re: Apache Software Foundation Security Report: 2020 lists.apache.org
- lists.apache.org lists.apache.org
Timeline
- Published
- Added to the KEV catalogue
- Last modified