COMMON WEAKNESS ENUMERATIONIncomplete

CWE-253

Incorrect Check of Function Return Value

The product incorrectly checks a return value from a function, which prevents it from detecting errors or exceptional conditions.

Soyutlama

Base

Yapı

Simple

Sömürü İhtimali

Low

Problemi anla

Problem nedir?

The product incorrectly checks a return value from a function, which prevents it from detecting errors or exceptional conditions.

Genişletilmiş açıklama

Important and common functions will return some value about the success of its actions. This will alert the program whether or not to handle any errors caused by that function.

Kök neden

Problem nasıl ve ne zaman oluşur?

Yaşam döngüsü evresi

Implementation

Risk

Başarılı sömürü neye yol açar?

Unexpected StateDoS: Crash, Exit, or Restart

Etkilenen güvenlik alanları: Availability, Integrity

An unexpected return value could place the system in a state that could lead to a crash or other unintended behaviors.

Savunma

Nasıl önlenir ve çözülür?

Architecture and Design

Language Selection

Detay
Use a language or compiler that uses exceptions and requires the catching of those exceptions.

Implementation

Uygulama aşaması savunması

Detay
Properly check all functions which return a value.

Implementation

Uygulama aşaması savunması

Detay
When designing any function make sure you return a value or throw an exception in case of an error.

Doğrulama

Nasıl tespit edilir?

Automated Static Analysis

High
Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)
CWE-253: Common Weakness Enumeration Entry CWE-253 · DayBreach Sözlük · DayBreach