CVE-2023-3485
LowCVSS 3.0Exploitation Probability (EPSS)
Low risk5th percentile — higher than 5% of all known CVEs
Summary
Insecure defaults in open-source Temporal Server before version 1.20 on all platforms allow an attacker to craft a task token with access to a namespace other than the one specified in the request. This requires the namespace UUID and information from the workflow history for the target namespace.
Risk Assessment
An attacker can interfere with pending tasks in other namespaces, potentially marking tasks as completed or failed. This poses a risk to the integrity and availability of the system.
Recommendation
It is recommended to upgrade the Temporal Server to version 1.20 or later and review default security settings to minimize the risk of unauthorized access to namespaces.
Original NVD description (English source)
Insecure defaults in open-source Temporal Server before version 1.20 on all platforms allows an attacker to craft a task token with access to a namespace other than the one specified in the request. Creation of this task token must be done outside of the normal Temporal server flow. It requires the namespace UUID and information from the workflow history for the target namespace. Under these conditions, it is possible to interfere with pending tasks in other namespaces, such as marking a task failed or completed. If a task is targeted for completion by the attacker, the targeted namespace must also be using the same data converter configuration as the initial, valid, namespace for the task completion payload to be decoded by workers in the target namespace.