Falhas do tipo CWE-122

3.736 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-2023-37329HIGHGStreamer SRT File Parsing Heap-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 1.6%CVE-2023-24928HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.6%CVE-2023-24926HIGHMicrosoft PostScript and PCL6 Class Printer Driver Remote Code Execution VulnerabilityEPSS 1.6%CVE-2023-21727HIGHRemote Procedure Call Runtime Remote Code Execution VulnerabilityEPSS 1.6%CVE-2022-2125HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.6%CVE-2022-0080HIGHHeap-based Buffer Overflow in mruby/mrubyEPSS 1.6%CVE-2024-38120HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-38115HIGHWindows IP Routing Management Snapin Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-38121HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-38130HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-37335HIGHMicrosoft SQL Server Native Scoring Remote Code Execution VulnerabilityEPSS 1.6%CVE-2024-26191HIGHMicrosoft SQL Server Native Scoring Remote Code Execution VulnerabilityEPSS 1.6%CVE-2020-28595HIGHAn out-of-bounds write vulnerability exists in the Obj.cpp load_obj() functionality of Prusa Research PrusaSlicer 2.2.0 and Master (commit 4EPSS 1.6%CVE-2022-1942HIGHHeap-based Buffer Overflow in vim/vimEPSS 1.6%CVE-2019-5039HIGHAn exploitable command execution vulnerability exists in the ASN1 certificate writing functionality of Openweave-core version 4.0.2. A speciEPSS 1.6%CVE-2024-37322HIGHSQL 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-2024-21449HIGHSQL 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-2024-37327HIGHSQL Server Native Client OLE DB Provider Remote Code Execution VulnerabilityEPSS 1.6%