CWE-835 不可达退出条件的循环(无限循环) 类弱点 237 条 CVE 漏洞汇总,含 AI 中文分析。
CWE-835属于逻辑缺陷类漏洞,指程序包含无法到达退出条件的循环,导致无限执行。攻击者通常利用此缺陷发起拒绝服务攻击,通过触发无限循环耗尽服务器CPU资源或内存,使合法用户无法访问服务。开发者应避免此类问题,需确保循环变量在每次迭代中正确更新,并设置合理的边界检查或超时机制,保证循环最终能正常终止。
int processMessagesFromServer(char *hostaddr, int port) { ... int servsock; int connected; struct sockaddr_in servaddr; // create socket to connect to server servsock = socket( AF_INET, SOCK_STREAM, 0); memset( &servaddr, 0, sizeof(servaddr)); servaddr.sin_family = AF_INET; servaddr.sin_port = htons(port); servaddr.sin_addr.s_addr = inet_addr(hostaddr); do { // establish connection to server connected = connect(servsock, (struct sockaddr *)&servaddr, sizeof(servaddr)); // if connected then read and process messages from server if (connected > -1) { // read and process messages ... } // keep trint processMessagesFromServer(char *hostaddr, int port) { ... // initialize number of attempts counter int count = 0; do { // establish connection to server connected = connect(servsock, (struct sockaddr *)&servaddr, sizeof(servaddr)); // increment counter count++; // if connected then read and process messages from server if (connected > -1) { // read and process messages ... } // keep trying to establish connection to the server // up to a maximum number of attempts } while (connected < 0 && count < MAX_ATTEMPTS); // close socket and return success or failure ... }public boolean isReorderNeeded(String bookISBN, int rateSold) { boolean isReorder = false; int minimumCount = 10; int days = 0; // get inventory count for book int inventoryCount = inventory.getIventoryCount(bookISBN); // find number of days until inventory count reaches minimum while (inventoryCount > minimumCount) { inventoryCount = inventoryCount - rateSold; days++; } // if number of days within reorder timeframe // set reorder return boolean to true if (days > 0 && days < 5) { isReorder = true; } return isReorder; }public boolean isReorderNeeded(String bookISBN, int rateSold) { ... // validate rateSold variable if (rateSold < 1) { return isReorder; } ... }CWE-835(不可达退出条件的循环(无限循环)) 是常见的弱点类别,本平台收录该类弱点关联的 237 条 CVE 漏洞。