Falhas do tipo CWE-119

3.506 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-2021-1433HIGHCisco IOS XE SD-WAN Software vDaemon Buffer Overflow VulnerabilityEPSS 2.3%CVE-2017-6791—A vulnerability in the Trust Verification Service (TVS) of Cisco Unified Communications Manager could allow an unauthenticated, remote attacEPSS 2.3%CVE-2018-0132—A vulnerability in the forwarding information base (FIB) code of Cisco IOS XR Software could allow an unauthenticated, remote attacker to caEPSS 2.3%CVE-2017-12270—A vulnerability in the gRPC code of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers could allow an unauEPSS 2.3%CVE-2017-12293—A vulnerability in Cisco WebEx Meetings Server could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.EPSS 2.3%CVE-2017-12259—A vulnerability in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA51x Series IP Phones couEPSS 2.3%CVE-2017-12260—A vulnerability in the implementation of Session Initiation Protocol (SIP) functionality in Cisco Small Business SPA50x, SPA51x, and SPA52x EPSS 2.3%CVE-2019-11926—Insufficient boundary checks when processing M_SOFx markers from JPEG headers in the GD extension could allow access to out-of-bounds memoryEPSS 2.3%CVE-2017-9633HIGHAn Improper Restriction of Operations within the Bounds of a Memory Buffer issue was discovered in the Continental AG Infineon S-Gold 2 (PMBEPSS 2.2%CVE-2023-3036HIGHOut of Bounds Slice index in cfnts leads to remote panicEPSS 2.2%CVE-2021-22710—A CWE-119:Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in Interactive Graphical SCADA SystemEPSS 2.2%CVE-2021-22709—A CWE-119:Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in Interactive Graphical SCADA SystemEPSS 2.2%CVE-2022-26776CRITICALThis issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.4, macOS Big Sur 11.6.6. An attacker may be able to EPSS 2.2%CVE-2018-8872—In Schneider Electric Triconex Tricon MP model 3008 firmware versions 10.0-10.4, system calls read directly from memory addresses within theEPSS 2.2%CVE-2025-8168HIGHD-Link DIR-513 formSetWanPPPoE websAspInit buffer overflowEPSS 2.2%CVE-2025-8169HIGHD-Link DIR-513 HTTP POST Request formSetWanPPTPpath formSetWanPPTPcallback buffer overflowEPSS 2.2%CVE-2021-34874HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.2%CVE-2020-27874HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Tencent WeChat 7.0.18. User interaction isEPSS 2.2%CVE-2019-17320—NetSarang XFTP Client 6.0149 and earlier version contains a buffer overflow vulnerability caused by improper boundary checks when copying fiEPSS 2.2%CVE-2020-3451MEDIUMCisco Small Business RV340 Series Routers Command Injection and Remote Code Execution VulnerabilitiesEPSS 2.2%