Логотип exploitDog
Консоль
Логотип exploitDog

exploitDog

github логотип

GHSA-4jg2-84c2-pj95

Опубликовано: 21 сент. 2021
Источник: github
Github: Прошло ревью
CVSS3: 9.9

Описание

Improper Control of Generation of Code ('Code Injection') in @asyncapi/modelina

Impact

Anyone who is using the default presets and/or does not handle the functionality themself.

Patches

It is impossible to fully guard against this, because users have access to the original raw information. However, as of version 1, if you only access the constrained models, you will not encounter this issue.

Further similar situations are NOT seen as a security issue, but intended behavior.

Workarounds

Fully custom presets that change the entire rendering process which can then escape the user input.

For more information

Even though that I changed all the presets here, the vulnerability is still present throughout. I am using a JSON Schema here for simplicity.

const jsonSchemaDoc = { $id: 'CustomClass', type: 'object', properties: { 'property: any; \n constructor(){console.log("injected")} \n private _temp': { type: 'string' }, } }; generator = new TypeScriptGenerator( { presets: [ { class: { property({ propertyName, content }) { return `private ${propertyName}: any;`; }, ctor() { return ''; }, getter() { return ''; }, setter() { return ''; } } } ] } ); const inputModel = await generator.process(jsonSchemaDoc);

This would render

export class CustomClass { private property: any; constructor(){console.log("injected")} private _temp: any; private additionalProperties: any; }

Пакеты

Наименование

@asyncapi/modelina

npm
Затронутые версииВерсия исправления

< 1.0.0

1.0.0

EPSS

Процентиль: 62%
0.00434
Низкий

9.9 Critical

CVSS3

Дефекты

CWE-94

Связанные уязвимости

CVSS3: 9.9
nvd
около 3 лет назад

Modelina is a library for generating data models based on inputs such as AsyncAPI, OpenAPI, or JSON Schema documents. Versions prior to 1.0.0 are vulnerable to Code injection. This issue affects anyone who is using the default presets and/or does not handle the functionality themself. This issue has been partially mitigated in version 1.0.0, with the maintainer's GitHub Security Advisory (GHSA) noting "It is impossible to fully guard against this, because users have access to the original raw information. However, as of version 1, if you only access the constrained models, you will not encounter this issue. Further similar situations are NOT seen as a security issue, but intended behavior." The suggested workaround from the maintainers is "Fully custom presets that change the entire rendering process which can then escape the user input."

EPSS

Процентиль: 62%
0.00434
Низкий

9.9 Critical

CVSS3

Дефекты

CWE-94