[nginx] svn commit: r4557 - trunk/src/core

[mdounin at mdounin.ru]

Author: mdounin
Date: 2012-03-22 11:57:18 +0000 (Thu, 22 Mar 2012)
New Revision: 4557
URL: http://trac.nginx.org/nginx/changeset/4557/nginx

Log:
Resolver: added missing sanity checking when creating name queries.

Found by Veracode.


Modified:
   trunk/src/core/ngx_resolver.c

Modified: trunk/src/core/ngx_resolver.c
===================================================================
--- trunk/src/core/ngx_resolver.c	2012-03-22 10:45:08 UTC (rev 4556)
+++ trunk/src/core/ngx_resolver.c	2012-03-22 11:57:18 UTC (rev 4557)
@@ -1840,7 +1840,7 @@
             len++;
 
         } else {
-            if (len == 0) {
+            if (len == 0 || len > 255) {
                 return NGX_DECLINED;
             }
 
@@ -1851,6 +1851,10 @@
         p--;
     }
 
+    if (len == 0 || len > 255) {
+        return NGX_DECLINED;
+    }
+
     *p = (u_char) len;
 
     return NGX_OK;