# Security Advisory for "Log4Shell"

Source: https://junglewise.ai/threats/security-advisory-for-log4shell-c66162ab  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-01-21  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2022-01-21

Security Advisory for "Log4Shell"

Technologies: [com.hazelcast:hazelcast (Maven)](https://junglewise.ai/threats/technologies/com-hazelcast-hazelcast). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 21 January 2022.

**Which products and versions are affected?** com.hazelcast:hazelcast (Maven) ECOSYSTEM:introduced=5.0,fixed=5.0.2; com.hazelcast.jet:hazelcast-jet (Maven) ECOSYSTEM:introduced=4.1,fixed=4.5.3.

**Is there a fix for This vulnerability?** Yes. com.hazelcast:hazelcast (Maven): upgrade to 5.0.2 or later; com.hazelcast.jet:hazelcast-jet (Maven): upgrade to 4.5.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run com.hazelcast:hazelcast (Maven) or com.hazelcast.jet:hazelcast-jet (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- com.hazelcast:hazelcast (Maven): upgrade to 5.0.2 or later

  ```sh
  # set com.hazelcast:hazelcast to 5.0.2 in your pom.xml or build.gradle
  ```

- com.hazelcast.jet:hazelcast-jet (Maven): upgrade to 4.5.3 or later

  ```sh
  # set com.hazelcast.jet:hazelcast-jet to 4.5.3 in your pom.xml or build.gradle
  ```


## Affected products

- com.hazelcast:hazelcast (Maven) ECOSYSTEM:introduced=5.0,fixed=5.0.2
- com.hazelcast.jet:hazelcast-jet (Maven) ECOSYSTEM:introduced=4.1,fixed=4.5.3

## Related threats

- [Missing permission checks on Hazelcast client protocol](https://junglewise.ai/threats/cve-2023-45859-missing-permission-checks-on-hazelcast-client-protocol)
- [Hazelcast Platform permission checking in CSV File Source connector](https://junglewise.ai/threats/cve-2023-45860-hazelcast-platform-permission-checking-in-csv-file-source)
- [Hazelcast Executor Services don't check client permissions properly](https://junglewise.ai/threats/cve-2023-33265-hazelcast-executor-services-don-t-check-client-permissions)
- [Hazelcast vulnerable to unmasked password exposure](https://junglewise.ai/threats/cve-2023-33264-hazelcast-vulnerable-to-unmasked-password-exposure)
- [Hazelcast connection caching](https://junglewise.ai/threats/cve-2022-36437-hazelcast-connection-caching)