Zulip up to 6.1/6.2 authorization

Summaryinfo

A vulnerability was found in Zulip up to 6.1/6.2. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation leads to authorization. This vulnerability is traded as CVE-2023-32677. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Zulip up to 6.1/6.2. This issue affects an unknown function. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. The summary by CVE is:

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.

The weakness was shared 05/20/2023 as GHSA-mrvp-96q6-jpvc. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-32677 since 05/11/2023. The technical details are unknown and an exploit is not publicly available.

Applying the patch 7c2693a2c64904d1d0af8503b57763943648cbe5 is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Name

• Zulip

Version

• 6.0
• 6.1
• 6.2

License

• open-source

Website

• Product: https://github.com/zulip/zulip/

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CPE 2.2info

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