Fallos del tipo CWE-787
5133 resultadosEscrita fora dos limites de memória
Ocorre quando um programa escreve dados em uma posição de memória fora do intervalo alocado para um buffer, array ou estrutura. O atacante aproveita para sobrescrever dados adjacentes (variáveis, ponteiros, pilha de retorno), alterando o comportamento da aplicação ou assumindo controle total do sistema.
Ejemplo
Um programa lê 256 bytes de entrada do usuário e copia para um buffer de 64 bytes sem validação. O atacante envia 300 bytes, que transbordam o buffer e sobrescrevem o endereço de retorno na pilha, permitindo execução de código arbitrário.
Cómo mitigar
Sempre validar tamanho de entrada contra o limite do buffer antes de copiar (usar strncpy, snprintf em vez de strcpy, sprintf). Em linguagens modernas, usar estruturas bounds-checked (Rust, C# arrays) ou linters que detectem padrões perigosos.
CVE-2023-3596HIGHRockwell Automation Allen-Bradley ControlLogix Communication Modules vulnerable to Denial of Service EPSS 3.7%CVE-2021-30665HIGHA memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 7.4.1, iOS 14.5.1 and iPadOS 14.5.1, EPSS 3.7%KEVCVE-2017-17410—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Bitdefender Internet Security 2018. UserEPSS 3.7%CVE-2020-17425HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.922. User interacEPSS 3.7%CVE-2017-2615MEDIUMQuick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur whEPSS 3.6%CVE-2020-17418HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.922. User interacEPSS 3.6%CVE-2018-20252—In WinRAR versions prior to and including 5.60, there is an out-of-bounds write vulnerability during parsing of crafted ACE and RAR archive EPSS 3.6%CVE-2019-5083CRITICALAn exploitable out-of-bounds write vulnerability exists in the igcore19d.dll TIFdecodethunderscan function of Accusoft ImageGear 19.3.0 librEPSS 3.6%CVE-2017-9634—Mitsubishi E-Designer, Version 7.52 Build 344 contains two code sections which may be exploited to allow an attacker to overwrite arbitrary EPSS 3.6%CVE-2022-47942HIGHAn issue was discovered in ksmbd in the Linux kernel 5.15 through 5.19 before 5.19.2. There is a heap-based buffer overflow in set_ntacl_dacEPSS 3.6%CVE-2017-2620MEDIUMQuick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The isEPSS 3.6%CVE-2024-53197HIGHALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devicesEPSS 3.6%KEVCVE-2020-27860HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.0.1.35811. User interactioEPSS 3.6%CVE-2006-20001—Apache HTTP Server: mod_dav out of bounds read, or write of zero byteEPSS 3.5%CVE-2021-21044HIGHAcrobat Reader DC Out-Of-Bounds Write Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 3.5%CVE-2021-28564HIGHAdobe Acrobat Reader out-of-bounds write vulnerability could lead to arbitrary code executionEPSS 3.5%CVE-2018-1176—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.0.29935. User interactiEPSS 3.5%CVE-2020-26995—A vulnerability has been identified in JT2Go (All versions < V13.1.0), Teamcenter Visualization (All versions < V13.1.0). Affected applicatiEPSS 3.5%CVE-2019-6759HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.3.10826. User interactionEPSS 3.5%CVE-2019-6760HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.16811. User interactionEPSS 3.5%