Falhas do tipo CWE-787

5.843 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-2022-44255CRITICALTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a pre-authentication buffer overflow in the main function via long post data.EPSS 2.3%CVE-2026-3909HIGHOut of bounds write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a cEPSS 2.3%KEVCVE-2021-28596HIGHAdobe FrameMaker PDF File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 2.3%CVE-2022-23186HIGHAdobe Illustrator Out-of-bounds Write could lead to Arbitrary code executionEPSS 2.3%CVE-2022-30649HIGHAdobe Illustrator Out-of-bounds Write could lead to Arbitrary code executionEPSS 2.3%CVE-2022-32792HIGHAn out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 15.6 and iPadOS 15.6, watchOS 8.7, tvOEPSS 2.3%CVE-2021-46656HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Bentley View 10.15.0.75. User interaction EPSS 2.3%CVE-2021-23169—A heap-buffer overflow was found in the copyIntoFrameBuffer function of OpenEXR in versions before 3.0.1. An attacker could use this flaw toEPSS 2.3%CVE-2022-28848HIGHAdobe Bridge PCX Out-of-bounds Write Remote Code Execution VulnerabilityEPSS 2.3%CVE-2022-28846HIGHAdobe Bridge SVG File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 2.3%CVE-2022-28847HIGHAdobe Bridge Font Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 2.3%CVE-2024-32039CRITICALFreeRDP Integer overflow & OutOfBound Write in clear_decompress_residual_dataEPSS 2.3%CVE-2022-44259HIGHTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter week, sTime, and eTime in the setParentalEPSS 2.3%CVE-2022-44256HIGHTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter lang in the setLanguageCfg function.EPSS 2.3%CVE-2022-44254HIGHTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter text in the setSmsCfg function.EPSS 2.3%CVE-2022-44253HIGHTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter ip in the setDiagnosisCfg function.EPSS 2.3%CVE-2022-44257HIGHTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter pppoeUser in the setOpModeCfg function.EPSS 2.3%CVE-2022-44260HIGHTOTOLINK LR350 V9.3.5u.6369_B20220309 contains a post-authentication buffer overflow via parameter sPort/ePort in the setIpPortFilterRules fEPSS 2.3%CVE-2022-22709HIGHVP9 Video Extensions Remote Code Execution VulnerabilityEPSS 2.3%CVE-2022-24457HIGHHEIF Image Extensions Remote Code Execution VulnerabilityEPSS 2.3%