Fallos del tipo CWE-787

5142 resultados

Escrita fora dos limites de memória

Ocorre quando um programa escreve dados em uma posição de memória fora do intervalo alocado para um buffer, array ou estrutura. O atacante aproveita para sobrescrever dados adjacentes (variáveis, ponteiros, pilha de retorno), alterando o comportamento da aplicação ou assumindo controle total do sistema.

Ejemplo

Um programa lê 256 bytes de entrada do usuário e copia para um buffer de 64 bytes sem validação. O atacante envia 300 bytes, que transbordam o buffer e sobrescrevem o endereço de retorno na pilha, permitindo execução de código arbitrário.

Cómo mitigar

Sempre validar tamanho de entrada contra o limite do buffer antes de copiar (usar strncpy, snprintf em vez de strcpy, sprintf). Em linguagens modernas, usar estruturas bounds-checked (Rust, C# arrays) ou linters que detectem padrões perigosos.

CVE-2022-40854CRITICALTenda AC18 router contained a stack overflow vulnerability in /goform/fast_setting_wifi_setEPSS 1.1%CVE-2022-40868CRITICALTenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formDeEPSS 1.1%CVE-2022-40853CRITICALTenda AC15 router V15.03.05.19 contains a stack overflow via the list parameter at /goform/fast_setting_wifi_setEPSS 1.1%CVE-2022-40860CRITICALTenda AC15 router V15.03.05.19 contains a stack overflow vulnerability in the function formSetQosBand->FUN_0007dd20 with request /goform/SetEPSS 1.1%CVE-2022-40867CRITICALTenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formIPEPSS 1.1%CVE-2021-32969HIGHDelta Electronics DIAScreen - Type Confusion, Out-of-bounds WriteEPSS 1.1%CVE-2022-44193CRITICALNetgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameters: starthour, startminute , endhour, and endminuteEPSS 1.1%CVE-2022-44191CRITICALNetgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameters KEY1 and KEY2.EPSS 1.1%CVE-2022-44190CRITICALNetgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameter enable_band_steering.EPSS 1.1%CVE-2022-44186CRITICALNetgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameter wan_dns1_pri.EPSS 1.1%CVE-2022-44196CRITICALNetgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow via parameter openvpn_push1.EPSS 1.1%CVE-2022-44197CRITICALNetgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow via parameter openvpn_server_ip.EPSS 1.1%CVE-2022-44188CRITICALNetgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow in /usr/sbin/httpd via parameter enable_band_steering.EPSS 1.1%CVE-2022-44187CRITICALNetgear R7000P V1.3.0.8 is vulnerable to Buffer Overflow via wan_dns1_pri.EPSS 1.1%CVE-2022-41742HIGHNGINX ngx_http_mp4_module vulnerability CVE-2022-41742EPSS 1.1%CVE-2021-43612HIGHIn lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via shEPSS 1.1%CVE-2021-20987HIGHHilscher: EtherNet/IP stack crash for specific CIP serviceEPSS 1.1%CVE-2024-47615HIGHGHSL-2024-117: GStreamer has an out-of-bounds write in Ogg demuxerEPSS 1.1%CVE-2021-26623HIGHBandisoft ARK Library Out-of-bound VulnerabilityEPSS 1.1%CVE-2019-13721HIGHUse after free in PDFium in Google Chrome prior to 78.0.3904.87 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 1.1%