Bug 13606

	Apache's suEXEC wrapper doesn't enforce user limits.  Users may
	exhaust various system resources, even though resource limits
	have been properly set.

Fix: This patch is for Apache-1.3.9:



#include <stdarg.h>

@@ -250,6 +251,7 @@
     char *cmd;                 /* command to be executed    */
     char cwd[AP_MAXPATH];      /* current working directory */
     char dwd[AP_MAXPATH];      /* docroot working directory */
+    login_cap_t *lc;           /* user resource limits      */
     struct passwd *pw;         /* password entry holder     */
     struct group *gr;          /* group entry holder        */
     struct stat dir_info;      /* directory info holder     */
@@ -401,6 +403,19 @@
     if ((gid == 0) || (gid < GID_MIN)) {
	log_err("cannot run as forbidden gid (%d/%s)\n", gid, cmd);
	exit(108);
+    }
+
+    /*
+     * Apply user resource limits based on login class.
+     */
+    if ((lc = login_getclassbyname(pw->pw_class, pw)) == NULL) {
+	log_err("failed to login_getclassbyname()\n");
+	exit(109);
+    }
+
+    if ((setusercontext(lc, pw, uid, LOGIN_SETRESOURCES)) != 0) {
+	log_err("failed to setusercontext()\n");
+	exit(109);
     }

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--- suexec.c.orig       Tue Jun 22 10:51:41 1999
+++ suexec.c    Mon Sep  6 21:47:33 1999
@@ -75,6 +75,7 @@
 #include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <login_cap.h>
How-To-Repeat: 
	Enable the suEXEC wrapper for user CGI scripts and expect the
	system to be 'more stable'.  Weep as the system grounds to a
	halt when user 'bob' uploads his "for(;;)" code and tells his
	mates to "click here as many times as you can!".
	Note that user bob has maxproc set to 2 and cputime to 60 secs.