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Edit Report

Our sensors found this exploit at: http://cxsecurity.com/ascii/WLB-2014030250

Below is a copy:

Hello!

A bug in the experimental SPDY implementation in nginx was found, which
might allow an attacker to cause a heap memory buffer overflow in a
worker process by using a specially crafted request, potentially
resulting in arbitrary code execution (CVE-2014-0133).

The problem affects nginx 1.3.15 - 1.5.11, compiled with the
ngx_http_spdy_module module (which is not compiled by default) and
without --with-debug configure option, if the "spdy" option of the
"listen" directive is used in a configuration file.

The problem is fixed in nginx 1.5.12, 1.4.7.

Patch for the problem can be found here:

http://nginx.org/download/patch.2014.spdy2.txt

--- src/http/ngx_http_spdy.c
+++ src/http/ngx_http_spdy.c
@@ -1849,7 +1849,7 @@ static u_char *
 ngx_http_spdy_state_save(ngx_http_spdy_connection_t *sc,
     u_char *pos, u_char *end, ngx_http_spdy_handler_pt handler)
 {
-#if (NGX_DEBUG)
+#if 1
     if (end - pos > NGX_SPDY_STATE_BUFFER_SIZE) {
         ngx_log_error(NGX_LOG_ALERT, sc->connection->log, 0,
                       "spdy state buffer overflow: "


Thanks to Lucas Molas, researcher at Programa STIC, Fundacin Dr. Manuel
Sadosky, Buenos Aires, Argentina.


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