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CVE-2024-27309

HIGH
Published 2024-04-12T06:58:45.134Z
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CVSS Score

V3.1
7.4
/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.178
Higher than 17.8% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Description

While an Apache Kafka cluster is being migrated from ZooKeeper mode to KRaft mode, in some cases ACLs will not be correctly enforced.

Two preconditions are needed to trigger the bug:
1. The administrator decides to remove an ACL
2. The resource associated with the removed ACL continues to have two or more other ACLs associated with it after the removal.

When those two preconditions are met, Kafka will treat the resource as if it had only one ACL associated with it after the removal, rather than the two or more that would be correct.

The incorrect condition is cleared by removing all brokers in ZK mode, or by adding a new ACL to the affected resource. Once the migration is completed, there is no metadata loss (the ACLs all remain).

The full impact depends on the ACLs in use. If only ALLOW ACLs were configured during the migration, the impact would be limited to availability impact. if DENY ACLs were configured, the impact could include confidentiality and integrity impact depending on the ACLs configured, as the DENY ACLs might be ignored due to this vulnerability during the migration period.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Apache Software Foundation

Apache Kafka

Affected Versions:

3.5.0 3.6.0
apache

kafka

Affected Versions:

3.5.0 3.6.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

Apache Kafka: Potential incorrect access control during migration from ZK mode to KRaft mode

GHSA-79vv-vp32-gpp7

Advisory Details

While an Apache Kafka cluster is being migrated from ZooKeeper mode to KRaft mode, in some cases ACLs will not be correctly enforced. Two preconditions are needed to trigger the bug: 1. The administrator decides to remove an ACL 2. The resource associated with the removed ACL continues to have two or more other ACLs associated with it after the removal. When those two preconditions are met, Kafka will treat the resource as if it had only one ACL associated with it after the removal, rather than the two or more that would be correct. The incorrect condition is cleared by removing all brokers in ZK mode, or by adding a new ACL to the affected resource. Once the migration is completed, there is no metadata loss (the ACLs all remain). The full impact depends on the ACLs in use. If only ALLOW ACLs were configured during the migration, the impact would be limited to availability impact. if DENY ACLs were configured, the impact could include confidentiality and integrity impact depending on the ACLs configured, as the DENY ACLs might be ignored due to this vulnerability during the migration period.

Affected Packages

Maven org.apache.kafka:kafka-metadata
ECOSYSTEM: ≥3.5.0 <3.6.2

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-27309
WEB https://github.com/apache/kafka/commit/c000b1fae2bd7d4b76713a53508f128a13431ab6
PACKAGE https://github.com/apache/kafka
WEB https://lists.apache.org/thread/6536rmzyg076lzzdw2xdktvnz163mjpy
WEB https://security.netapp.com/advisory/ntap-20240705-0002
WEB http://www.openwall.com/lists/oss-security/2024/04/12/3

Advisory provided by GitHub Security Advisory Database. Published: April 12, 2024, Modified: February 13, 2025

References

https://lists.apache.org/thread/6536rmzyg076lzzdw2xdktvnz163mjpy
http://www.openwall.com/lists/oss-security/2024/04/12/3
https://security.netapp.com/advisory/ntap-20240705-0002/
Published: 2024-04-12T06:58:45.134Z
Last Modified: 2025-02-13T17:46:23.448Z
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