Falhas do tipo CWE-787
5.133 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-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%