gentoo-overlay/sys-process/vixie-cron/files/vixie-cron-4.1-setuid_check.patch

--- vixie-cron-4.1/do_command.c	2006-05-25 16:44:26.000000000 +0400
+++ vixie-cron-4.1.lk/do_command.c	2006-05-25 16:42:25.000000000 +0400
@@ -240,12 +240,23 @@
 			}
 		}
 #else
-		setgid(e->pwd->pw_gid);
+		
 		initgroups(usernm, e->pwd->pw_gid);
 #if (defined(BSD)) && (BSD >= 199103)
 		setlogin(usernm);
 #endif /* BSD */
-		setuid(e->pwd->pw_uid);	/* we aren't root after this... */
+		// setuid(e->pwd->pw_uid);	/* we aren't root after this... */
+		
+	if ( setgid(e->pwd->pw_gid) == -1 ) {
+		fprintf(stderr,"can't set gid for %s\n", e->pwd->pw_name);
+		_exit(1);
+	}
+		
+	if ( setuid(e->pwd->pw_uid) == -1 ) {
+		fprintf(stderr,"can't set uid for %s\n", e->pwd->pw_name);
+		_exit(1);
+	}
+		
 
 #endif /* LOGIN_CAP */
 		chdir(env_get("HOME", e->envp));