Hazelcast Executor Services don't check client permissions properly

Description

Impact

In Hazelcast Platform, 5.0 through 5.0.4, 5.1 through 5.1.6, and 5.2 through 5.2.3, and Hazelcast IMDG (all versions up to 4.2.z), Executor Services don't check client permissions properly, allowing authenticated users to execute tasks on members without the required permissions granted.

Patches

Fix versions: 5.3.0, 5.2.4, 5.1.7, 5.0.5

Workarounds

Users are only affected when they already use executor services (i.e., an instance exists as a distributed data structure).

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2023-07-19 22:08:40 UTC
Updated
2023-11-07 05:02:48 UTC
GitHub reviewed
2023-07-19 22:08:40 UTC
NVD published
2023-07-18 16:15:11 UTC

EPSS Score

Score Percentile
0.21% 44.05%

CVSS Scores

Base score Version Severity Vector
7.6 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-862 Missing Authorization

Affected packages (6)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven com.hazelcast:hazelcast >= 5.2.0, <= 5.2.3 5.2.4
maven com.hazelcast:hazelcast >= 5.1.0, <= 5.1.6 5.1.7
maven com.hazelcast:hazelcast <= 5.0.4 5.0.5
maven com.hazelcast:hazelcast-enterprise >= 5.2.0, <= 5.2.3 5.2.4
maven com.hazelcast:hazelcast-enterprise >= 5.1.0, <= 5.1.6 5.1.7
maven com.hazelcast:hazelcast-enterprise <= 5.0.4 5.0.5

References

cvelogic Threat Intelligence