CVE-2023-3485

Insecure Default Authorization in Temporal Server

Published Jun 30, 2023 CVSS 3.1 · 3 Low EPSS < 1% KEV · Not listed
Description
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.



Remediation

Vendor Solution

* Set   frontend.enableTokenNamespaceEnforcement https://github.com/temporalio/temporal/pull/3798  to true  * Upgrade to version 1.20 or above, where this is the default

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-1805 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.
Github GHSA Github GHSA GHSA-gm2g-2xr9-pxxj Temporal Server vulnerable to Incorrect Authorization and Insecure Default Initialization of Resource
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Temporal
Published
Updated
Oct 28, 2024, 1:05 PM
Reserved
Jun 30, 2023, 5:29 PM
Status
Modified
Published
Jun 30, 2023, 6:15 PM
Modified
Jun 17, 2026, 6:14 AM