dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.62.3 through 0.70.5, ClassRepresentation.render_metaclass inserts a schema-controlled Avro record name into the quoted Meta.schema_name field of generated Python source without escaping it. A crafted name can terminate the string literal and inject statements into the generated class body, which execute when the generated module is imported.
Version 0.70.6 fixes the vulnerability by escaping schema values rendered into generated string literals.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
marcosschroh:dataclasses-avroschema
References 4
https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA…
https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-57hr-pcm8-p9j9
https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c…
https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc
https://github.com/marcosschroh/dataclasses-avroschema/commit/919d3e07c8938369c…
https://github.com/marcosschroh/dataclasses-avroschema/commit/919d3e07c8938369cfc2c0569007ba373247e74a
https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6
https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6