Falhas do tipo CWE-787
5.140 resultadosEscrita fora dos limites de memória
Ocorre quando um programa escreve dados em um endereço de memória fora da área alocada para um buffer ou variável. O código não valida o tamanho ou índice antes de gravar, permitindo sobrescrita de dados adjacentes, corrupção de estruturas críticas ou execução de código arbitrário.
Exemplo
Um formulário web que copia dados do usuário para um buffer de 256 bytes sem validar o tamanho da entrada. Se o atacante envia 500 bytes, a escrita transborda e sobrescreve a pilha, podendo hijackear o endereço de retorno da função.
Como mitigar
Use funções seguras de cópia (strncpy, strlcpy ao invés de strcpy; memcpy com tamanho máximo explícito) e sempre valide comprimento e índices antes de escrever. Em linguagens modernas, prefira estruturas com bounds-checking automático (arrays em Java, Rust, etc).
CVE-2024-29131HIGHApache Commons Configuration: StackOverflowError adding property in AbstractListDelimiterHandler.flattenIterator()EPSS 2.1%CVE-2024-27815MEDIUMAn out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.EPSS 2.0%CVE-2021-34940HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46572HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-46569HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-46581HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-46574HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-34899HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46576HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-34898HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46568HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2021-44001—A vulnerability has been identified in JT2Go (All versions < V13.2.0.5), Teamcenter Visualization (All versions < V13.2.0.5). The DL180pdfl.EPSS 2.0%CVE-2023-20869HIGHVMware Workstation (17.x) and VMware Fusion (13.x) contain a stack-based buffer-overflow vulnerability that exists in the functionality for EPSS 2.0%CVE-2021-46564HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2022-41220CRITICALmd2roff 1.9 has a stack-based buffer overflow via a Markdown file, a different vulnerability than CVE-2022-34913. NOTE: the vendor's positioEPSS 2.0%CVE-2021-34915HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-34918HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2017-20149CRITICALThe Mikrotik RouterOS web server allows memory corruption in releases before Stable 6.38.5 and Long-term 6.37.5, aka Chimay-Red. A remote anEPSS 2.0%CVE-2021-34873HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2019-5084HIGHAn exploitable heap out-of-bounds write vulnerability exists in the TIF-parsing functionality of LEADTOOLS 20. A specially crafted TIF imageEPSS 2.0%