66 vulnerabilities classified as CWE-704 (不正确的类型转换). AI Chinese analysis included.
CWE-704 represents a critical software weakness where an application fails to properly convert or cast data between different types, leading to unpredictable behavior or security vulnerabilities. This flaw is typically exploited by attackers who manipulate input data to trigger unintended type conversions, potentially causing buffer overflows, logic errors, or privilege escalation. For instance, forcing a string to be interpreted as an integer might bypass validation checks or corrupt memory structures. To mitigate this risk, developers must implement rigorous input validation and explicitly define type boundaries during conversion processes. Utilizing strongly typed languages and avoiding implicit casts can significantly reduce exposure. Additionally, employing static analysis tools to detect unsafe type operations and conducting thorough code reviews ensures that all conversions are handled safely, preserving data integrity and preventing exploitation of these logical flaws.
unsigned int readdata () { int amount = 0; ... amount = accessmainframe(); ... return amount; }#define NAME_TYPE 1 #define ID_TYPE 2 struct MessageBuffer { int msgType; union { char *name; int nameID; }; }; int main (int argc, char **argv) { struct MessageBuffer buf; char *defaultMessage = "Hello World"; buf.msgType = NAME_TYPE; buf.name = defaultMessage; printf("Pointer of buf.name is %p\n", buf.name); /* This particular value for nameID is used to make the code architecture-independent. If coming from untrusted input, it could be any value. */ buf.nameID = (int)(defaultMessage + 1); printf("Pointer of buf.name is now %p\n", buf.name); if (buf.msgType == NAME_TYPE) { printf("Message: %Vulnerabilities classified as CWE-704 (不正确的类型转换) represent 66 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.