[patch] Patch against 2.2.11 from RedHat's bugzilla

apache-CVE-2009-1195.patch (text/plain), 6.14 KB, created by Alex Legler (RETIRED) on 2009-05-28 09:35:43 UTC

Property changes on: .
___________________________________________________________________
Modified: svn:mergeinfo
   Merged /httpd/httpd/trunk:r772997,773322,773342

Index: STATUS
===================================================================
Index: server/config.c
===================================================================
--- server/config.c	(revision 773036)
+++ server/config.c	(working copy)
@@ -1510,7 +1510,7 @@
     parms.temp_pool = ptemp;
     parms.server = s;
     parms.override = (RSRC_CONF | OR_ALL) & ~(OR_AUTHCFG | OR_LIMIT);
-    parms.override_opts = OPT_ALL | OPT_INCNOEXEC | OPT_SYM_OWNER | OPT_MULTI;
+    parms.override_opts = OPT_ALL | OPT_SYM_OWNER | OPT_MULTI;
 
     parms.config_file = ap_pcfg_open_custom(p, "-c/-C directives",
                                             &arr_parms, NULL,
@@ -1617,7 +1617,7 @@
     parms.temp_pool = ptemp;
     parms.server = s;
     parms.override = (RSRC_CONF | OR_ALL) & ~(OR_AUTHCFG | OR_LIMIT);
-    parms.override_opts = OPT_ALL | OPT_INCNOEXEC | OPT_SYM_OWNER | OPT_MULTI;
+    parms.override_opts = OPT_ALL | OPT_SYM_OWNER | OPT_MULTI;
 
     rv = ap_pcfg_openfile(&cfp, p, fname);
     if (rv != APR_SUCCESS) {
@@ -1755,7 +1755,7 @@
     parms.temp_pool = ptemp;
     parms.server = s;
     parms.override = (RSRC_CONF | OR_ALL) & ~(OR_AUTHCFG | OR_LIMIT);
-    parms.override_opts = OPT_ALL | OPT_INCNOEXEC | OPT_SYM_OWNER | OPT_MULTI;
+    parms.override_opts = OPT_ALL | OPT_SYM_OWNER | OPT_MULTI;
     parms.limited = -1;
 
     errmsg = ap_walk_config(conftree, &parms, s->lookup_defaults);
Index: server/core.c
===================================================================
--- server/core.c	(revision 773036)
+++ server/core.c	(working copy)
@@ -108,8 +108,7 @@
     conf->opts = dir ? OPT_UNSET : OPT_UNSET|OPT_ALL;
     conf->opts_add = conf->opts_remove = OPT_NONE;
     conf->override = dir ? OR_UNSET : OR_UNSET|OR_ALL;
-    conf->override_opts = OPT_UNSET | OPT_ALL | OPT_INCNOEXEC | OPT_SYM_OWNER
-                          | OPT_MULTI;
+    conf->override_opts = OPT_UNSET | OPT_ALL | OPT_SYM_OWNER | OPT_MULTI;
 
     conf->content_md5 = 2;
     conf->accept_path_info = 3;
@@ -242,8 +241,15 @@
         conf->opts_remove = (conf->opts_remove & ~new->opts_add)
                             | new->opts_remove;
         conf->opts = (conf->opts & ~conf->opts_remove) | conf->opts_add;
-        if ((base->opts & OPT_INCNOEXEC) && (new->opts & OPT_INCLUDES)) {
-            conf->opts = (conf->opts & ~OPT_INCNOEXEC) | OPT_INCLUDES;
+
+        /* If Includes was enabled with exec in the base config, but
+         * was enabled without exec in the new config, then disable
+         * exec in the merged set. */
+        if (((base->opts & (OPT_INCLUDES|OPT_INC_WITH_EXEC))
+             == (OPT_INCLUDES|OPT_INC_WITH_EXEC))
+            && ((new->opts & (OPT_INCLUDES|OPT_INC_WITH_EXEC))
+                == OPT_INCLUDES)) {
+            conf->opts &= ~OPT_INC_WITH_EXEC;
         }
     }
     else {
@@ -1304,10 +1310,12 @@
             opt = OPT_INDEXES;
         }
         else if (!strcasecmp(w, "Includes")) {
-            opt = OPT_INCLUDES;
+            /* If Includes is permitted, both Includes and
+             * IncludesNOEXEC may be changed. */
+            opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
         }
         else if (!strcasecmp(w, "IncludesNOEXEC")) {
-            opt = (OPT_INCLUDES | OPT_INCNOEXEC);
+            opt = OPT_INCLUDES;
         }
         else if (!strcasecmp(w, "FollowSymLinks")) {
             opt = OPT_SYM_LINKS;
@@ -1428,10 +1436,10 @@
             opt = OPT_INDEXES;
         }
         else if (!strcasecmp(w, "Includes")) {
-            opt = OPT_INCLUDES;
+            opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
         }
         else if (!strcasecmp(w, "IncludesNOEXEC")) {
-            opt = (OPT_INCLUDES | OPT_INCNOEXEC);
+            opt = OPT_INCLUDES;
         }
         else if (!strcasecmp(w, "FollowSymLinks")) {
             opt = OPT_SYM_LINKS;
Index: CHANGES
===================================================================
--- CHANGES	(revision 773036)
+++ CHANGES	(working copy)
@@ -5,6 +5,12 @@
      mod_proxy_ajp: Avoid delivering content from a previous request which
      failed to send a request body. PR 46949 [Ruediger Pluem]
 
+  *) SECURITY: CVE-2009-1195 (cve.mitre.org)
+     Prevent the "Includes" Option from being enabled in an .htaccess 
+     file if the AllowOverride restrictions do not permit it.
+     [Jonathan Peatfield <j.s.peatfield damtp.cam.ac.uk>, Joe Orton,
+      Ruediger Pluem]
+
   *) mod_proxy_ajp: Check more strictly that the backend follows the AJP
      protocol. [Mladen Turk]
 
Index: modules/filters/mod_include.c
===================================================================
--- modules/filters/mod_include.c	(revision 773036)
+++ modules/filters/mod_include.c	(working copy)
@@ -3574,7 +3574,7 @@
         intern->seen_eos = 0;
         intern->state = PARSE_PRE_HEAD;
         ctx->flags = (SSI_FLAG_PRINTING | SSI_FLAG_COND_TRUE);
-        if (ap_allow_options(r) & OPT_INCNOEXEC) {
+        if ((ap_allow_options(r) & OPT_INC_WITH_EXEC) == 0) {
             ctx->flags |= SSI_FLAG_NO_EXEC;
         }
         intern->accessenable = conf->accessenable;
Index: include/http_core.h
===================================================================
--- include/http_core.h	(revision 773036)
+++ include/http_core.h	(working copy)
@@ -65,7 +65,7 @@
 #define OPT_NONE 0
 /** Indexes directive */
 #define OPT_INDEXES 1
-/**  Includes directive */
+/** SSI is enabled without exec= permission  */
 #define OPT_INCLUDES 2
 /**  FollowSymLinks directive */
 #define OPT_SYM_LINKS 4
@@ -73,14 +73,14 @@
 #define OPT_EXECCGI 8
 /**  directive unset */
 #define OPT_UNSET 16
-/**  IncludesNOEXEC directive */
-#define OPT_INCNOEXEC 32
+/**  SSI exec= permission is permitted, iff OPT_INCLUDES is also set */
+#define OPT_INC_WITH_EXEC 32
 /** SymLinksIfOwnerMatch directive */
 #define OPT_SYM_OWNER 64
 /** MultiViews directive */
 #define OPT_MULTI 128
 /**  All directives */
-#define OPT_ALL (OPT_INDEXES|OPT_INCLUDES|OPT_SYM_LINKS|OPT_EXECCGI)
+#define OPT_ALL (OPT_INDEXES|OPT_INCLUDES|OPT_INC_WITH_EXEC|OPT_SYM_LINKS|OPT_EXECCGI)
 /** @} */
 
 /**