138 vulnerabilities classified as CWE-494 (下载代码缺少完整性检查). AI Chinese analysis included.
CWE-494 represents a critical integrity verification weakness where software retrieves and executes code from remote sources without adequately validating its origin or authenticity. This vulnerability is typically exploited by attackers who compromise the distribution server, manipulate DNS records to redirect requests to malicious hosts, or intercept and alter the code during transit via man-in-the-middle attacks. Consequently, the application unknowingly runs compromised payloads, leading to full system takeover or data exfiltration. To mitigate this risk, developers must implement robust cryptographic verification mechanisms, such as digital signatures or checksums, ensuring that downloaded artifacts match their expected values. Additionally, utilizing secure transport protocols like HTTPS and maintaining strict certificate validation further prevents tampering, thereby guaranteeing that only trusted, unmodified code is executed within the application environment.
URL[] classURLs= new URL[]{ new URL("file:subdir/") }; URLClassLoader loader = new URLClassLoader(classURLs); Class loadedClass = Class.forName("loadMe", true, loader);//assume the password is already encrypted, avoiding CWE-312 function authenticate($username,$password){ include("http://external.example.com/dbInfo.php"); //dbInfo.php makes $dbhost, $dbuser, $dbpass, $dbname available mysql_connect($dbhost, $dbuser, $dbpass) or die ('Error connecting to mysql'); mysql_select_db($dbname); $query = 'Select * from users where username='.$username.' And password='.$password; $result = mysql_query($query); if(mysql_numrows($result) == 1){ mysql_close(); return true; } else{ mysql_close(); return false; } }Vulnerabilities classified as CWE-494 (下载代码缺少完整性检查) represent 138 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.