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CVE-2020-17519

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Date: January 5, 2021

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.

Language: Java

Severity Score

Severity Score

Weakness Type (CWE)

Files or Directories Accessible to External Parties

CWE-552

Top Fix

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Upgrade Version

Upgrade to version org.apache.flink:flink-runtime_2.11:release-1.11.3-rc1,org.apache.flink:flink-runtime_2.11:release-1.12.0-rc2,org.apache.flink:flink-runtime_2.12:release-1.11.3-rc1,org.apache.flink:flink-runtime_2.12:release-1.12.0-rc2

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privilegs Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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