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Known exploited vulnerability

CVE-2020-17519

highCVSS 3.1 7.5In CISA KEVEPSS 98%Published · Apache Software Foundation

The short answer

CVE-2020-17519 affects Apache Software Foundation Apache Flink and is rated high (CVSS 7.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-05-23: attackers are using it, so patch it first. Fixed versions are published for flink-runtime_2.11 (1.11.3) and flink-runtime_2.12 (1.11.3).

What it is

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.

Weakness: CWE-552.

Severity

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploited (CISA KEV)

Yes, since May 23, 2024

Federal due date Jun 13, 2024

EPSS, next 30 days

98%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected packages and fixed versions

PackageEcosystemFixed inAdvisory
org.apache.flink:flink-runtime_2.11Maven1.11.3GHSA-395w-qhqr-9fr6
org.apache.flink:flink-runtime_2.12Maven1.11.3GHSA-395w-qhqr-9fr6

Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.

Affected products

Apache Flink, flink. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2020-17519 being exploited?

Yes. CISA added CVE-2020-17519 to its Known Exploited Vulnerabilities catalog on 2024-05-23, with a federal remediation due date of 2024-06-13.

How do I fix CVE-2020-17519?

Upgrade to a fixed version: org.apache.flink:flink-runtime_2.11 (Maven) 1.11.3; org.apache.flink:flink-runtime_2.12 (Maven) 1.11.3. CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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