Falhas do tipo CWE-787

5.142 resultados

Escrita 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-2024-20727HIGH[TianfuCup] out-of-bounds access vulnerability when parsing jpeg2000EPSS 2.0%CVE-2021-34875HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.0%CVE-2021-46818HIGHAdobe Media Encoder M4A file memory corruption vulnerability could lead to remote code executionEPSS 2.0%CVE-2021-27488—Datakit Software libraries CatiaV5_3dRead, CatiaV6_3dRead, Step3dRead, Ug3dReadPsr, Jt3dReadPsr modules in KeyShot Versions v10.1 and prior EPSS 2.0%CVE-2021-46635HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley MicroStation CONNECT 10.16.0.80. UEPSS 2.0%CVE-2022-47379HIGHCODESYS: Multiple products prone to out-of-bounds writeEPSS 2.0%CVE-2019-11037MEDIUMOut of bounds memory write in PHP Imagick extensionEPSS 2.0%CVE-2023-3935CRITICALWibu: Buffer Overflow in CodeMeter RuntimeEPSS 2.0%CVE-2022-24786CRITICALPotential out-of-bound read/write in PJSIPEPSS 2.0%CVE-2021-43756HIGHAdobe Media Encoder Memory Corruption Vulnerability could lead to Remote Code ExecutionEPSS 2.0%CVE-2019-5088HIGHAn exploitable memory corruption vulnerability exists in Investintech Able2Extract Professional 14.0.7 x64. A specially crafted BMP file canEPSS 2.0%CVE-2022-23985HIGHICSA-22-055-01 FATEK Automation FvDesignerEPSS 2.0%CVE-2018-14632HIGHAn out of bound write can occur when patching an Openshift object using the 'oc patch' functionality in OpenShift Container Platform before EPSS 2.0%CVE-2021-34343MEDIUMBuffer Overflow Vulnerability in QTS, QuTS hero, and QuTScloudEPSS 1.9%CVE-2021-46817HIGHAdobe Media Encoder M4A file memory corruption vulnerability could lead to remote code executionEPSS 1.9%CVE-2023-40890CRITICALA stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to iEPSS 1.9%CVE-2021-34878HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2021-34876HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 1.9%CVE-2023-25564MEDIUMGSS-NTLMSSP vulnerable to memory corruption when decoding UTF16 stringsEPSS 1.9%CVE-2021-28591HIGHAdobe Illustrator PDF File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 1.9%