GitLab Critical Security Release: 15.11.2, 15.10.6, and 15.9.7

Today we are releasing versions 15.11.2, 15.10.6, and 15.9.7 for GitLab Community Edition (CE) and Enterprise Edition (EE).

These versions contain important security fixes, and we strongly recommend that all GitLab installations be upgraded to one of these versions immediately. GitLab.com is already running the patched version.

GitLab releases patches for vulnerabilities in dedicated security releases. There are two types of security releases: a monthly, scheduled security release, released a week after the feature release (which deploys on the 22nd of each month), and ad-hoc security releases for critical vulnerabilities. For more information, you can visit our security FAQ. You can see all of our regular and security release blog posts here. In addition, the issues detailing each vulnerability are made public on our issue tracker 30 days after the release in which they were patched.

We are dedicated to ensuring all aspects of GitLab that are exposed to customers or that host customer data are held to the highest security standards. As part of maintaining good security hygiene, it is highly recommended that all customers upgrade to the latest security release for their supported version. You can read more best practices in securing your GitLab instance in our blog post.

Recommended Action

We strongly recommend that all installations running a version affected by the issues described below are upgraded to the latest version as soon as possible.

When no specific deployment type (omnibus, source code, helm chart, etc.) of a product is mentioned, this means all types are affected.

Table of Fixes

Title	Severity
Malicious Runner Attachment via GraphQL	critical

Malicious Runner Attachment via GraphQL

An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.4 before 15.9.7, all versions starting from 15.10 before 15.10.6, all versions starting from 15.11 before 15.11.2. Under certain conditions, any GitLab user account on the instance may use a GraphQL endpoint to attach a malicious runner to any project on the instance. This is a critical severity issue (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N, 9.6). It is now mitigated in the latest release and is assigned CVE-2023-2478.

Thanks yvvdwf for reporting this vulnerability through our HackerOne bug bounty program.

Non Security Patches

This security release also includes the following non-security patches.

15.10.6

• Backport IP enforcement FF to 15.10
• Bundle libarchive in the package

Updating

To update GitLab, see the Update page. To update Gitlab Runner, see the Updating the Runner page.

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