svn commit: r1582262 - /httpd/httpd/trunk/modules/lua/lua_apr.c

[hu...@apache.org]

Author: humbedooh
Date: Thu Mar 27 11:20:03 2014
New Revision: 1582262

URL: http://svn.apache.org/r1582262
Log:
mod_lua: Prevent HTTP Response Splitting by not allowing tables in the request_rec to be set with values containing newlines. This is a semi-ugly hack, but it will have to do until we find another way of setting these values.

Modified:
    httpd/httpd/trunk/modules/lua/lua_apr.c

Modified: httpd/httpd/trunk/modules/lua/lua_apr.c
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/lua/lua_apr.c?rev=1582262&r1=1582261&r2=1582262&view=diff
==============================================================================
--- httpd/httpd/trunk/modules/lua/lua_apr.c (original)
+++ httpd/httpd/trunk/modules/lua/lua_apr.c Thu Mar 27 11:20:03 2014
@@ -39,7 +39,14 @@ static int lua_table_set(lua_State *L)
     apr_table_t    *t = ap_lua_check_apr_table(L, 1);
     const char     *key = luaL_checkstring(L, 2);
     const char     *val = luaL_checkstring(L, 3);
-
+    
+    /* Prevent response/header splitting by not allowing newlines in tables.
+     * At this stage, we don't have the request_rec handy, and we can't change
+     * a const char*, so we'll redirect to a standard error value instead.
+     */
+    if (ap_strchr_c(val, '\n')) {
+        val = "[ERROR: Value contains newline, ignored.]";
+    }
     apr_table_set(t, key, val);
     return 0;
 }