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-2024-38242HIGHKernel Streaming Service Driver Elevation of Privilege VulnerabilityEPSS 3.4%CVE-2019-6740CRITICALThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Galaxy S9 prior to January 2019 EPSS 3.3%CVE-2023-21812HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 3.3%CVE-2024-20677HIGHMicrosoft Office Remote Code Execution VulnerabilityEPSS 3.3%CVE-2021-24036—Passing an attacker controlled size when creating an IOBuf could cause integer overflow, leading to an out of bounds write on the heap with EPSS 3.3%CVE-2020-26986—A vulnerability has been identified in JT2Go (All versions < V13.1.0), Teamcenter Visualization (All versions < V13.1.0). Affected applicatiEPSS 3.3%CVE-2022-39260HIGHGit vulnerable to Remote Code Execution via Heap overflow in `git shell`EPSS 3.3%CVE-2022-31144HIGHPotential heap overflow in Redis EPSS 3.2%CVE-2018-9949—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.0.29935. User interactiEPSS 3.2%CVE-2018-9947—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.0.29935. User interactiEPSS 3.2%CVE-2018-9974—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.1049. User interactioEPSS 3.2%CVE-2023-6779HIGHGlibc: off-by-one heap-based buffer overflow in __vsyslog_internal()EPSS 3.2%CVE-2019-9501HIGHBroadcom wl driver is vulnerable to heap buffer overflowEPSS 3.1%CVE-2024-20696HIGHWindows libarchive Remote Code Execution VulnerabilityEPSS 3.1%CVE-2022-1381HIGHglobal heap buffer overflow in skip_range in vim/vimEPSS 3.1%CVE-2021-34770CRITICALCisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution VulnerabilityEPSS 3.0%CVE-2019-10951—Delta Industrial Automation CNCSoft, CNCSoft ScreenEditor Version 1.00.88 and prior. Multiple heap-based buffer overflow vulnerabilities mayEPSS 2.9%CVE-2013-3245MEDIUMplugins/demux/libmkv_plugin.dll in VideoLAN VLC Media Player 2.0.7, and possibly other versions, allows remote attackers to cause a denial oEPSS 2.9%CVE-2019-5030HIGHA buffer overflow vulnerability exists in the PowerPoint document conversion function of Rainbow PDF Office Server Document Converter V7.0 PEPSS 2.9%CVE-2017-2591LOW389-ds-base before version 1.3.6 is vulnerable to an improperly NULL terminated array in the uniqueness_entry_to_config() function in the "aEPSS 2.9%