---
title: "CVE-2023-6477\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-2023-6477?format=md
keywords: index, follow
---

# CVE-2023-6477

Publication date 22 February 2024

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**6.7 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2023-6477?format=md#impact-score)

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## Description

An issue has been discovered in GitLab EE affecting all versions starting
from 16.5 before 16.7.6, all versions starting from 16.8 before 16.8.3, all
versions starting from 16.9 before 16.9.1. When a user is assigned a custom
role with admin\_group\_member permission, they may be able to make a group,
other members or themselves Owners of that group, which may lead to
privilege escalation.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| gitlab | 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 22.04 LTS jammy | Not in release |
| 20.04 LTS focal | Not in release |
| 18.04 LTS bionic | Not in release |
| 16.04 LTS xenial | Ignored end of standard support |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.7 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.7 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6477)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-6477)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-6477)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2023-6477)

### Other references

* <https://gitlab.com/gitlab-org/gitlab/-/issues/433463>
* <https://hackerone.com/reports/2270898>
* <https://www.cve.org/CVERecord?id=CVE-2023-6477>