First published: Fri May 19 2023(Updated: )
Zulip is an open-source team collaboration tool with unique topic-based threading. Zulip administrators can configure Zulip to limit who can add users to streams, and separately to limit who can invite users to the organization. In Zulip Server 6.1 and below, the UI which allows a user to invite a new user also allows them to set the streams that the new user is invited to -- even if the inviting user would not have permissions to add an existing user to streams. While such a configuration is likely rare in practice, the behavior does violate security-related controls. This does not let a user invite new users to streams they cannot see, or would not be able to add users to if they had that general permission. This issue has been addressed in version 6.2. Users are advised to upgrade. Users unable to upgrade may limit sending of invitations down to users who also have the permission to add users to streams.
Credit: security-advisories@github.com
Affected Software | Affected Version | How to fix |
---|---|---|
Zulip Zulip | <6.2 |
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
CVE-2023-32677 is a vulnerability in Zulip Server 6.1 and below that allows unauthorized users to invite new users to the organization.
CVE-2023-32677 is classified as a low severity vulnerability with a severity value of 3.1.
To fix CVE-2023-32677, you should update Zulip Server to version 6.2 or above.
The CWE ID for CVE-2023-32677 is 862.
You can find more information about CVE-2023-32677 at the following references: [reference link 1](https://github.com/zulip/zulip/commit/7c2693a2c64904d1d0af8503b57763943648cbe5), [reference link 2](https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc), [reference link 3](https://zulip.com/help/configure-who-can-invite-to-streams).