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Diffstat (limited to 'examples-secure/command-injection')
-rw-r--r--examples-secure/command-injection/command-injection.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/examples-secure/command-injection/command-injection.c b/examples-secure/command-injection/command-injection.c
new file mode 100644
index 0000000..01eb15d
--- /dev/null
+++ b/examples-secure/command-injection/command-injection.c
@@ -0,0 +1,17 @@
+#include <stdlib.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+ int argl = strlen(argv[1]);
+ char cmd[argl + 6];
+
+ for (int i = 0; i < argl; i++)
+ if (argv[1][i] == ';' || argv[1][i] == '|' || argv[1][i] == '&')
+ argv[1][i] = ' ';
+ strcpy(cmd, "echo ");
+ strcat(cmd, argv[1]);
+ system(cmd);
+
+ return 0;
+}