Language: C
Label: vulnerable
CWE: CWE-22 \u2014 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Code:
static int restrictedFile(const char *filename)
{
	if (!live_dangerously && !strncasecmp(filename, "/", 1) &&
		 strncasecmp(filename, ast_config_AST_CONFIG_DIR, strlen(ast_config_AST_CONFIG_DIR))) {
		return 1;
	}
	return 0;
}