NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL.
NULL pointer dereferences typically cause the application to crash. In some cases, they may be exploitable for denial of service or potentially for code execution.
Jak naprawić tę podatność
Use the two-value form of type assertion or type switch to handle failures gracefully
- func processData(data interface{}) { - m := data.(map[string]interface{}) - fmt.Println(m["key"]) + func processData(data interface{}) error { + m, ok := data.(map[string]interface{}) + if !ok { + return errors.New("invalid data type") + } + fmt.Println(m["key"]) + return nil }
Replace non-null assertions (!) with explicit null checks or optional chaining
interface Config { database?: { host: string; port: number; }; } function connect(config: Config) { - const host = config.database!.host; - const port = config.database!.port; + if (!config.database) { + throw new Error('Database configuration is required'); + } + const { host, port } = config.database; return createConnection(host, port); }
Znajdz podatnosci w swoim kodzie
Uzyj Shoulder do skanowania kodu w poszukiwaniu wzorcow NULL Pointer Dereference. 2 reguly.
# Scan with Shoulder CLI npx @shoulderdev/cli trust --cwe=476 # Or scan entire project npx @shoulderdev/cli trust .
Reguly Wykrywania (2)
Na co zwracac uwage podczas przegladu kodu
Te wzorce wskazuja na potencjalne podatnosci NULL Pointer Dereference. Szukaj ich podczas przegladow kodu i audytow bezpieczenstwa.
Przeskanuj swój kod w poszukiwaniu NULL Pointer Dereference
Shoulder CLI znajduje podatne wzorce w całym Twoim kodzie.