Falhas do tipo CWE-119

3.239 resultados

Corrupção de Memória Genérica

É uma categoria abrangente que descreve qualquer acesso indevido à memória — escrever fora dos limites de um buffer, ler dados não inicializados, ou manipular ponteiros inválidos. O risco é grave: permite execução de código arbitrário, travamento da aplicação ou exposição de dados sensíveis.

Exemplo

Um programa em C copia dados do usuário para um array sem validar o tamanho (strcpy em vez de strncpy). Um atacante envia uma string maior que o buffer, sobrescrevendo dados adjacentes ou até o endereço de retorno da função, permitindo injetar código malicioso.

Como mitigar

Use funções seguras (strncpy, snprintf, memmove com limites explícitos), valide e sanitize toda entrada antes de copiar, ative canários de pilha e ASLR no SO, e aplique sanitizadores (ASAN, UBSAN) durante desenvolvimento e testes. Em linguagens seguras (Rust, Python) o problema é praticamente eliminado.

CVE-2021-30499—A flaw was found in libcaca. A buffer overflow of export.c in function export_troff might lead to memory corruption and other potential consEPSS 1.2%CVE-2025-9360HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 accessControlAdd stack-based overflowEPSS 1.2%CVE-2022-30937—A vulnerability has been identified in EN100 Ethernet module DNP3 IP variant (All versions), EN100 Ethernet module IEC 104 variant (All versEPSS 1.2%CVE-2020-15207HIGHSegfault and data corruption in tensorflow-liteEPSS 1.2%CVE-2024-36129HIGHOpenTelemetry Collector has a Denial of Service via Zip/Decompression Bomb sent over HTTP or gRPCEPSS 1.2%CVE-2022-29503HIGHA memory corruption vulnerability exists in the libpthread linuxthreads functionality of uClibC 0.9.33.2 and uClibC-ng 1.0.40. Thread allocaEPSS 1.2%CVE-2024-11061HIGHTenda AC10 fast_setting_wifi_set FUN_0044db3c stack-based overflowEPSS 1.2%CVE-2025-5798HIGHTenda AC8 SetSysTimeCfg fromSetSysTime stack-based overflowEPSS 1.2%CVE-2025-5799HIGHTenda AC8 WifiExtraSet fromSetWirelessRepeat stack-based overflowEPSS 1.2%CVE-2021-33479—A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in measure_pitch() in pgm2asc.c.EPSS 1.2%CVE-2025-5600CRITICALTOTOLINK EX1200T cstecgi.cgi setLanguageCfg stack-based overflowEPSS 1.2%CVE-2020-35521—A flaw was found in libtiff. Due to a memory allocation failure in tif_read.c, a crafted TIFF file can lead to an abort, resulting in denialEPSS 1.2%CVE-2025-4843HIGHD-Link DCS-932L udev SubUPnPCSInit stack-based overflowEPSS 1.2%CVE-2025-4841HIGHD-Link DCS-932L gpio sub_404780 stack-based overflowEPSS 1.2%CVE-2025-4842HIGHD-Link DCS-932L ucp isUCPCameraNameChanged stack-based overflowEPSS 1.2%CVE-2023-45235HIGHBuffer Overflow in EDK II Network PackageEPSS 1.2%CVE-2023-45230HIGHBuffer Overflow in EDK II Network PackageEPSS 1.2%CVE-2021-33481—A stack-based buffer overflow vulnerability was discovered in gocr through 0.53-20200802 in try_to_divide_boxes() in pgm2asc.c.EPSS 1.2%CVE-2025-7909HIGHD-Link DIR-513 Boa Webserver formLanSetupRouterSettings sprintf stack-based overflowEPSS 1.2%CVE-2025-7910HIGHD-Link DIR-513 Boa Webserver formSetWanNonLogin sprintf stack-based overflowEPSS 1.2%