Falhas do tipo CWE-122

3.188 resultados

Estouro de heap

Ocorre quando código escreve mais dados do que o espaço alocado em uma região de memória dinâmica (heap), sobrescrevendo dados adjacentes. Um atacante pode explorar isso para corromper estruturas de dados críticas, contornar proteções de segurança ou executar código arbitrário.

Exemplo

Um servidor web aloca 256 bytes para armazenar um nome de usuário, mas copia 512 bytes de uma requisição sem validação. Os 256 bytes extras sobrescrevem ponteiros ou metadados do heap, permitindo execução de código ou negação de serviço.

Como mitigar

Use funções seguras que respeitam limites (strcpy_s, memcpy com tamanho verificado em runtime). Validar e limitar o tamanho de entrada antes de copiar. Ativar proteções como ASLR, stack canaries e ferramentas de sanitização (AddressSanitizer) em desenvolvimento.

CVE-2024-48994HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-38255HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-48995HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-48996HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-43462HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-48993HIGHSQL Server Native Client Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37322HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37327HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-20701HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-21317HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-21449HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-21331HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37326HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37319HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-21425HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-49085HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-49086HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-11233MEDIUMSingle byte overread with convert.quoted-printable-decode filterEPSS 1.6%CVE-2024-38154HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-38114HIGHWindows IP Routing Management Snapin Remote Code Execution VulnerabilityEPSS 1.6%