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Exposure of Sensitive Information to an Unauthorized Actor in Apache Kafka

High severity GitHub Reviewed Published May 12, 2020 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven org.apache.kafka:kafka (Maven)

Affected versions

>= 2.0.0, <= 2.0.1
>= 2.1.0, <= 2.1.1
>= 2.2.0, <= 2.2.1
= 2.3.0

Patched versions

2.0.2
2.1.2
2.2.2
2.3.1

Description

When Connect workers in Apache Kafka 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, or 2.3.0 are configured with one or more config providers, and a connector is created/updated on that Connect cluster to use an externalized secret variable in a substring of a connector configuration property value, then any client can issue a request to the same Connect cluster to obtain the connector's task configuration and the response will contain the plaintext secret rather than the externalized secrets variables.

References

Published by the National Vulnerability Database Jan 14, 2020
Reviewed May 11, 2020
Published to the GitHub Advisory Database May 12, 2020
Last updated Feb 1, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

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

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.130%
(49th percentile)

Weaknesses

CVE ID

CVE-2019-12399

GHSA ID

GHSA-6jmf-mxwf-r3jc

Source code

No known source code
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