Zulip up to 8.2 information disclosure

Summaryinfo

A vulnerability labeled as problematic has been found in Zulip up to 8.2. Impacted is an unknown function. The manipulation results in information disclosure. This vulnerability is identified as CVE-2024-27286. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Zulip up to 8.2. Affected is an unknown part. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Zulip is an open-source team collaboration. When a user moves a Zulip message, they have the option to move all messages in the topic, move only subsequent messages as well, or move just a single message. If the user chose to just move one message, and was moving it from a public stream to a private stream, Zulip would successfully move the message, -- but active users who did not have access to the private stream, but whose client had already received the message, would continue to see the message in the public stream until they reloaded their client. Additionally, Zulip did not remove view permissions on the message from recently-active users, allowing the message to show up in the "All messages" view or in search results, but not in "Inbox" or "Recent conversations" views. While the bug has been present since moving messages between streams was first introduced in version 3.0, this option became much more common starting in Zulip 8.0, when the default option in the picker for moving the very last message in a conversation was changed. This issue is fixed in Zulip Server 8.3. No known workarounds are available.

The advisory is available at github.com. This vulnerability is traded as CVE-2024-27286 since 02/22/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 8.3 eliminates this vulnerability. Applying the patch 3db1733310ddd944c2e690ba673232345c928eec is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• Zulip

Version

• 8.0
• 8.1
• 8.2

License

• open-source

Website

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

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CPE 2.2info

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