🧞API Security Cheat Sheet PART - 7

Advanced Authentication Techniques and Their Security Implications

Credentials Containing Slashes
```
{"login": "admin/user",
 "password": "pass/word"}
```
Description: Features slashes, emphasizing the importance of handling special characters in credentials securely.
Credentials Containing Multiple Data Types
```
{"login": ["admin", 123, true, null, {"username": ["admin"]}],
 "password": ["password", 123, false, null, {"password": "password"}]}
```
Description: Demonstrates a mix of different data types, highlighting the complexity of validating varied data structures.
Using Escape Sequences
```
{"login": "admin\\r\\n\\t",
 "password": "password\\r\\n\\t"}
```
Description: Incorporates escape sequences, underlining the need for correct processing of these characters.
Using Curly Braces in Strings
```
{"login": "{admin}",
 "password": "{password}"}
```
Description: Utilizes curly braces, stressing the importance of parsing and validating characters often used in data structures.
Using Square Brackets in Strings
```
{"login": "[admin]",
 "password": "[password]"}
```
Description: Features square brackets, indicating the need to handle these characters appropriately in string values.
Strings with Only Special Characters
```
{"login": "!@#$$%^&*()",
 "password": "!@#$$%^&*()"}
```
Description: Contains only special characters, highlighting the importance of robust input validation and character handling.
Strings with Control Characters
```
{"login": "admin\b\f\n\r\t\v\0",
 "password": "password\b\f\n\r\t\v\0"}
```
Description: Involves control characters, underscoring the need for sanitizing inputs to prevent unintended effects.
Null Characters in Strings
```
{"login": "admin\0",
 "password": "password\0"}
```
Description: Features null characters, pointing to the necessity of handling null bytes in string data.
Exponential Numbers as Strings
```
{"login": "1e5",
 "password": "1e10"}
```
Description: Uses exponential notation, emphasizing the need for handling numeric formats in string fields.
Hexadecimal Numbers as Strings
```
{"login": "0xabc",
 "password": "0x123"}
```
Description: Demonstrates the use of hexadecimal values, highlighting the challenges in interpreting different numeric formats.

This comprehensive list of API authentication scenarios serves as a resource for developers and security professionals to understand and prepare for a wide range of challenges in API security. Each scenario underscores the importance of comprehensive validation, parsing, and sanitization strategies, crucial for maintaining robust security in API interactions.

PreviousAPI Security Cheat Sheet PART - 6 NextAPI Security Cheat Sheet PART - 8

Last updated 2 years ago