Hazelcast: Insecure Storage of Sensitive Information
CVE-2023-45859 is a high-severity insecure storage of sensitive information vulnerability in Hazelcast, with a CVSS 3.1 base score of 7.6 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 5.2.5, 5.3.5 as the first without the flaw, so updating Hazelcast to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.52% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Hazelcast to 5.2.5 or 5.3.5, whichever matches your release line, or a later version.
- Read the advisory on github.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Hazelcast | Hazelcast | 4.1.10 and earlier; 4.2.0 through 4.2.8; 5.0.0 through 5.0.5; 5.1.0 through 5.1.7; 5.2.0 up to, but not including, 5.2.5; 5.3.0 up to, but not including, 5.3.5 | 5.2.5, 5.3.5 |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- LowLimited modification of data is possible.
- Availability
- LowPerformance or availability is reduced.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L. Scored by CISA (ADP).
Official description
In Hazelcast through 4.1.10, 4.2 through 4.2.8, 5.0 through 5.0.5, 5.1 through 5.1.7, 5.2 through 5.2.4, and 5.3 through 5.3.2, some client operations don't check permissions properly, allowing authenticated users to access data stored in the cluster.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insecure Storage of Sensitive Information
The product stores sensitive information without properly limiting read or write access by unauthorized actors.
More Insecure Storage of Sensitive Information vulnerabilities (CWE-922)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Other vulnerabilities in Hazelcast
- 9.3 Critical severity
- 8.7 High severity
- 8.8 High severity
- 9.1 Critical severity
Recent Insecure Storage of Sensitive Information vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 8.1 High severity
- 7.5 High severity
- 7.8 High severity
- 7.5 High severity
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