Weaknesses of type CWE-121

3,820 results

Estouro de buffer na pilha

Ocorre quando um programa escreve mais dados em um buffer alocado na pilha do que ele pode conter, sobrescrevendo dados adjacentes (variáveis, endereços de retorno, ponteiros). Um atacante pode explorar isso para executar código arbitrário ou causar travamento.

Example

Um programa lê uma string do usuário com gets() ou strcpy() sem validar o tamanho, copiando 500 bytes para um buffer de 64 bytes. O excesso sobrescreve o endereço de retorno da função, permitindo desviar a execução para código malicioso.

How to mitigate

Use funções seguras (strncpy, fgets, snprintf) que aceitam limite de bytes; implemente verificações de limites explícitas no código; ative proteções do compilador/SO (stack canaries, DEP/NX, ASLR); use linguagens com verificação automática de limites ou ferramentas de análise estática.

CVE-2021-31438HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Studio Photo 3.6.6.931. User interacEPSS 2.8%CVE-2021-1185HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1319HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1329HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1194HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1348HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1159HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1195HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1342HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1326HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1346HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1332HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1168HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1347HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1328HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1334HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1335HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1339HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1330HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%CVE-2021-1186HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.8%