🧞‍♀️API Security Cheat Sheet PART - 6

Diverse Authentication Techniques and Their Security Implications (continued)

Backslashes in Strings
```
{"login": "ad\\min",
 "password": "pa\\ssword"}
```
Description: Demonstrates the use of backslashes, emphasizing the need for correct escape character handling.
Long Strings of Special Characters
```
{"login": "!@#$%^&*()"*1000,
 "password": "!@#$%^&*()"*1000}
```
Description: Features excessively long strings of special characters, pointing out the necessity for input length controls.
Empty Key in JSON
```
{"": "admin",
 "password": "password"}
```
Description: Utilizes an empty key, highlighting the importance of validating key names in JSON objects.
JSON Injection in Key
```
{"{\"injection\":\"value\"}": "admin",
 "password": "password"}
```
Description: Shows the potential for JSON injection within keys, underscoring the need for thorough validation of JSON keys.
Quotation Marks in Strings
```
{"login": "\"admin\"",
 "password": "\"password\""}
```
Description: Incorporates quotation marks, emphasizing the significance of parsing and validating such characters.
Credentials as Nested Arrays
```
{"login": [["admin"]],
 "password": [["password"]]}
```
Description: Features nested arrays, indicating the complexity of handling various data structures in authentication.
Credentials as Nested Objects
```
{"login": {"username": {"value": "admin"},
 "password": {"password": {"value": "password"}}}
```
Description: Utilizes deeply nested objects, pointing to the challenges in parsing and validating multi-layered JSON structures.
Keys as Numbers
```
{123: "admin",
 456: "password"}
```
Description: Uses numeric keys, emphasizing the need for handling non-string keys in JSON objects.
Testing with Greater Than and Less Than Signs
```
{"login": "admin>1",
 "password": "<password"}
```
Description: Involves comparison operators, highlighting the importance of sanitizing inputs to prevent logical errors or injections.
Testing with Parentheses in Credentials
```
{"login": "(admin)",
 "password": "(password)"}
```
Description: Features parentheses, underscoring the need for handling special characters appropriately in authentication processes.

This extensive API Security Cheat Sheet provides a detailed guide for developers and security experts, covering a wide array of authentication scenarios. Each case illustrates unique challenges, from managing complex data structures and special characters to ensuring robust validation and sanitization processes, all crucial for securing APIs.

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Last updated 2 years ago