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Tainted marshal pyramid
The application may convert user-controlled data into an object, which can lead to an insecure deserialization vulnerability. An attacker can create a malicious serialized object, pass it to the application, and take advantage of the deserialization process to perform Denial-of-service (DoS), Remote code execution (RCE), or bypass access control measures. To prevent this vulnerability, leverage data formats such as JSON or XML as safer alternatives. If you need to deserialize user input in a specific format, consider digitally signing the data before serialization to prevent tampering. For more information, see: Deserialization prevention The marshal module is not intended to be secure against erroneous or maliciously constructed data. Never unmarshal data received from an untrusted or unauthenticated source. For deserializing data from untrusted sources we recommend using YAML or JSON libraries with built-in protections, such as json, PyYAML, or ruamel.yaml.
Likelihood: MEDIUM
Confidence: HIGH
CWE:
- CWE-502: Deserialization of Untrusted Data
OWASP:
- A08:2017 - Insecure Deserialization
- A08:2021 - Software and Data Integrity Failures