Weaknesses of type CWE-787

5,142 results

Escrita fora dos limites da memória

Ocorre quando o código escreve dados em um endereço de memória fora do intervalo alocado para uma estrutura (array, buffer, objeto). O programa não valida o tamanho ou índice antes de escrever, permitindo sobrescrever memória adjacente — causando corrupção de dados, queda da aplicação ou execução arbitrária de código.

Example

Um formulário web que copia o valor de um campo do usuário para um buffer de 64 bytes sem verificar o comprimento: se o atacante enviar 200 caracteres, a escrita invade a memória vizinha e pode sobrescrever um ponteiro de função ou variável crítica.

How to mitigate

Sempre validar tamanhos de entrada antes de copiar (usar `strncpy` em vez de `strcpy`, ou bibliotecas seguras como `bounds-checking`); usar linguagens com verificação automática de limites (Java, Rust); aplicar testes de fuzzing e análise estática de código para detectar escritas desprotegidas.

CVE-2021-31508HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop 16.6.3.84. User inEPSS 1.8%CVE-2021-31513HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop Build 16.6.4.55. UEPSS 1.8%CVE-2021-31514HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop Build 16.6.4.55. UEPSS 1.8%CVE-2021-31511HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of OpenText Brava! Desktop Build 16.6.4.55. UEPSS 1.8%CVE-2024-37377HIGHA heap-based buffer overflow in IPsec of Ivanti Connect Secure before version 22.7R2.3 allows a remote unauthenticated attacker to cause a dEPSS 1.8%CVE-2023-2856MEDIUMVMS TCPIPtrace file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture fileEPSS 1.8%CVE-2023-2858MEDIUMNetScaler file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture fileEPSS 1.8%CVE-2024-25004HIGHKiTTY versions 0.76.1.13 and before is vulnerable to a stack-based buffer overflow via the username, occurs due to insufficient bounds checkEPSS 1.8%CVE-2019-1887HIGHCisco Unified Communications Manager Session Initiation Protocol Denial of Service VulnerabilityEPSS 1.8%CVE-2021-32988—FATEK Automation WinProladder Versions 3.30 and prior are vulnerable to an out-of-bounds write, which may allow an attacker to execute arbitEPSS 1.8%CVE-2019-14906HIGHA flaw was found with the RHSA-2019:3950 erratum, where it did not fix the CVE-2019-13616 SDL vulnerability. This issue only affects Red HatEPSS 1.8%CVE-2020-1894—A stack write overflow in WhatsApp for Android prior to v2.20.35, WhatsApp Business for Android prior to v2.20.20, WhatsApp for iPhone priorEPSS 1.8%CVE-2023-23531HIGHThe issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.2, iOS 16.3 and iPadOS 16.3. An app may be abEPSS 1.8%CVE-2021-3405—A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReEPSS 1.7%CVE-2021-44013—A vulnerability has been identified in JT2Go (All versions < V13.2.0.5), Teamcenter Visualization (All versions < V13.2.0.5). The DL180pdfl.EPSS 1.7%CVE-2021-34323—A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Jt981.dll library EPSS 1.7%CVE-2024-29133MEDIUMApache Commons Configuration: StackOverflowError calling ListDelimiterHandler.flatten(Object, int) with a cyclical object treeEPSS 1.7%CVE-2021-21046LOWAcrobat Reader DC Buffer Overflow Vulnerability Could Lead To Arbitrary Code ExecutionEPSS 1.7%CVE-2018-14810—WECON Technology Co., Ltd. PI Studio HMI versions 4.1.9 and prior and PI Studio versions 4.2.34 and prior parse files and pass invalidated uEPSS 1.7%CVE-2023-30800HIGHMikroTik RouterOS Web Interface Heap CorruptionEPSS 1.7%