JumpServer up to 3.5.4/3.6.3 HTTP Response Code ?limit=1 improper authentication

Summaryinfo

A vulnerability labeled as critical has been found in JumpServer up to 3.5.4/3.6.3. This affects an unknown function of the file /api/v1/terminal/sessions/?limit=1 of the component HTTP Response Code Handler. Executing a manipulation can lead to improper authentication. This vulnerability is registered as CVE-2023-42442. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in JumpServer up to 3.5.4/3.6.3. It has been declared as critical. This vulnerability affects an unknown part of the file /api/v1/terminal/sessions/?limit=1 of the component HTTP Response Code Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not affected. The api `/api/v1/terminal/sessions/` permission control is broken and can be accessed anonymously. SessionViewSet permission classes set to `[RBACPermission | IsSessionAssignee]`, relation is or, so any permission matched will be allowed. Versions 3.5.5 and 3.6.4 have a fix. After upgrading, visit the api `$HOST/api/v1/terminal/sessions/?limit=1`. The expected http response code is 401 (`not_authenticated`).

The weakness was published 09/16/2023 as GHSA-633x-3f4f-v9rw. The advisory is available at github.com. This vulnerability was named CVE-2023-42442 since 09/08/2023. Technical details are known, but there is no available exploit.

Upgrading to version 3.5.5 or 3.6.4 eliminates this vulnerability. Applying the patch 0a58bba59cd275bab8e0ae58bf4b359fbc5eb74a 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

• JumpServer

Version

• 3.5.0
• 3.5.1
• 3.5.2
• 3.5.3
• 3.5.4
• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3

License

• open-source

Website

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

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