GSD-2024-28121
Vulnerability from gsd - Updated: 2024-03-05 06:02Details
stimulus_reflex is a system to extend the capabilities of both Rails and Stimulus by intercepting user interactions and passing them to Rails over real-time websockets. In affected versions more methods than expected can be called on reflex instances. Being able to call some of them has security implications. To invoke a reflex a websocket message of the following shape is sent: `\"target\":\"[class_name]#[method_name]\",\"args\":[]`. The server will proceed to instantiate `reflex` using the provided `class_name` as long as it extends `StimulusReflex::Reflex`. It then attempts to call `method_name` on the instance with the provided arguments. This is problematic as `reflex.method method_name` can be more methods that those explicitly specified by the developer in their reflex class. A good example is the instance_variable_set method. This vulnerability has been patched in versions 3.4.2 and 3.5.0.rc4. Users unable to upgrade should: see the backing GHSA advisory for mitigation advice.
Aliases
{
"gsd": {
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"remediation": "unknown",
"reportConfidence": "confirmed",
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"details": "stimulus_reflex is a system to extend the capabilities of both Rails and Stimulus by intercepting user interactions and passing them to Rails over real-time websockets. In affected versions more methods than expected can be called on reflex instances. Being able to call some of them has security implications. To invoke a reflex a websocket message of the following shape is sent: `\\\"target\\\":\\\"[class_name]#[method_name]\\\",\\\"args\\\":[]`. The server will proceed to instantiate `reflex` using the provided `class_name` as long as it extends `StimulusReflex::Reflex`. It then attempts to call `method_name` on the instance with the provided arguments. This is problematic as `reflex.method method_name` can be more methods that those explicitly specified by the developer in their reflex class. A good example is the instance_variable_set method. This vulnerability has been patched in versions 3.4.2 and 3.5.0.rc4. Users unable to upgrade should: see the backing GHSA advisory for mitigation advice.",
"id": "GSD-2024-28121",
"modified": "2024-03-05T06:02:29.205023Z",
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"value": "stimulus_reflex is a system to extend the capabilities of both Rails and Stimulus by intercepting user interactions and passing them to Rails over real-time websockets. In affected versions more methods than expected can be called on reflex instances. Being able to call some of them has security implications. To invoke a reflex a websocket message of the following shape is sent: `\\\"target\\\":\\\"[class_name]#[method_name]\\\",\\\"args\\\":[]`. The server will proceed to instantiate `reflex` using the provided `class_name` as long as it extends `StimulusReflex::Reflex`. It then attempts to call `method_name` on the instance with the provided arguments. This is problematic as `reflex.method method_name` can be more methods that those explicitly specified by the developer in their reflex class. A good example is the instance_variable_set method. This vulnerability has been patched in versions 3.4.2 and 3.5.0.rc4. Users unable to upgrade should: see the backing GHSA advisory for mitigation advice."
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"lang": "eng",
"value": "CWE-470: Use of Externally-Controlled Input to Select Classes or Code (\u0027Unsafe Reflection\u0027)"
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"name": "https://github.com/stimulusreflex/stimulus_reflex/security/advisories/GHSA-f78j-4w3g-4q65",
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"url": "https://github.com/stimulusreflex/stimulus_reflex/commit/538582d240439aab76066c72335ea92096cd0c7f"
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"name": "https://github.com/stimulusreflex/stimulus_reflex/blob/0211cad7d60fe96838587f159d657e44cee51b9b/app/channels/stimulus_reflex/channel.rb#L83",
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"name": "http://seclists.org/fulldisclosure/2024/Mar/16",
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"lang": "en",
"value": "stimulus_reflex is a system to extend the capabilities of both Rails and Stimulus by intercepting user interactions and passing them to Rails over real-time websockets. In affected versions more methods than expected can be called on reflex instances. Being able to call some of them has security implications. To invoke a reflex a websocket message of the following shape is sent: `\\\"target\\\":\\\"[class_name]#[method_name]\\\",\\\"args\\\":[]`. The server will proceed to instantiate `reflex` using the provided `class_name` as long as it extends `StimulusReflex::Reflex`. It then attempts to call `method_name` on the instance with the provided arguments. This is problematic as `reflex.method method_name` can be more methods that those explicitly specified by the developer in their reflex class. A good example is the instance_variable_set method. This vulnerability has been patched in versions 3.4.2 and 3.5.0.rc4. Users unable to upgrade should: see the backing GHSA advisory for mitigation advice."
},
{
"lang": "es",
"value": "stimulus_reflex es un sistema para ampliar las capacidades de Rails y Stimulus interceptando las interacciones del usuario y pas\u00e1ndolas a Rails a trav\u00e9s de websockets en tiempo real. En las versiones afectadas se pueden invocar m\u00e1s m\u00e9todos de los esperados en instancias reflejas. Poder llamar a algunos de ellos tiene implicaciones de seguridad. Para invocar un reflejo, se env\u00eda un mensaje websocket con la siguiente forma: `\\\"target\\\":\\\"[class_name]#[method_name]\\\",\\\"args\\\":[]`. El servidor proceder\u00e1 a crear una instancia de `reflex` utilizando el `class_name` proporcionado siempre que extienda `StimulusReflex::Reflex`. Luego intenta llamar a \"method_name\" en la instancia con los argumentos proporcionados. Esto es problem\u00e1tico ya que `reflex.method method_name` puede contener m\u00e1s m\u00e9todos que los especificados expl\u00edcitamente por el desarrollador en su clase refleja. Un buen ejemplo es el m\u00e9todo instance_variable_set. Esta vulnerabilidad ha sido parcheada en las versiones 3.4.2 y 3.5.0.rc4. Los usuarios que no puedan actualizar deben: consultar el aviso de respaldo de GHSA para obtener consejos de mitigaci\u00f3n."
}
],
"id": "CVE-2024-28121",
"lastModified": "2024-03-13T21:16:00.460",
"metrics": {
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"source": "security-advisories@github.com",
"type": "Secondary"
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"published": "2024-03-12T20:15:08.313",
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"type": "Secondary"
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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