---
title: "CVE-2024-23944\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2024-23944?format=md
keywords: index, follow
---

# CVE-2024-23944

Publication date 15 March 2024

Last updated 15 September 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.3 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2024-23944?format=md#impact-score)

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## Description

Information disclosure in persistent watchers handling in Apache ZooKeeper
due to missing ACL check. It allows an attacker to monitor child znodes by
attaching a persistent watcher (addWatch command) to a parent which the
attacker has already access to. ZooKeeper server doesn't do ACL check when
the persistent watcher is triggered and as a consequence, the full path of
znodes that a watch event gets triggered upon is exposed to the owner of
the watcher. It's important to note that only the path is exposed by this
vulnerability, not the data of znode, but since znode path can contain
sensitive information like user name or login ID, this issue is potentially
critical.
Users are recommended to upgrade to version 3.9.2, 3.8.4 which fixes the
issue.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2024-23944?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| zookeeper | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Vulnerable |
| 23.10 mantic | Ignored end of life, was needs-triage |
| 22.04 LTS jammy | Not affected |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2024-23944?format=md#patch-details)

## Notes

---

### [ej7367](https://launchpad.net/~ej7367)

Affects 3.9.0 through 3.9.1, 3.8.0 through 3.8.3, and 3.6.0 through
3.7.2

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| zookeeper | * Upstream:   [65b91d2](https://github.com/apache/zookeeper/commit/65b91d2d9a56157285c2a86b106e67c26520b01d) * Upstream:   [daf7cfd](https://github.com/apache/zookeeper/commit/daf7cfd04005cff1a4f7cab5ab13d41db88d0cd8) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-23944)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-23944)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2024-23944)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2024-23944)

### Other references

* <https://www.openwall.com/lists/oss-security/2024/03/14/2>
* <https://lists.apache.org/thread/96s5nqssj03rznz9hv58txdb2k1lr79k>
* <https://www.cve.org/CVERecord?id=CVE-2024-23944>