nginx 漏洞（适用于0.1.0-0.8.14）补丁

漏洞介绍：

 

As with a number of other web servers, nginx is designed to operate with a single privileged master process and multiple unprivileged worker processes handling specific requests. A remote, unauthenticated attacker may be able to execute arbitrary code in the context of the worker process or cause the worker process to crash, resulting in a denial of service.

 

补丁说明：

 

进入Nginx源码包，找到src/http/ngx_http_parse.c 文件，修改：

u -= 4;
                if (u < r->uri.data) {
                    return NGX_HTTP_PARSE_INVALID_REQUEST;
                }
                while (*(u - 1) != '/') {
为

u -= 5;
                for ( ;; ) {
                    if (u < r->uri.data) {
                        return NGX_HTTP_PARSE_INVALID_REQUEST;
                    }
                    if (*u == '/') {
                        u++;
                        break;
                    }
然后重新编译。

官网补丁说明：

Index: src/http/ngx_http_parse.c
===================================================================
--- src/http/ngx_http_parse.c (revision 2410)
+++ src/http/ngx_http_parse.c (revision 2411)
@@ -1134,11 +1134,15 @@
 #endif
             case '/':
                 state = sw_slash;
-                u -= 4;
-                if (u < r->uri.data) {
-                    return NGX_HTTP_PARSE_INVALID_REQUEST;
-                }
-                while (*(u - 1) != '/') {
+                u -= 5;
+                for ( ;; ) {
+                    if (u < r->uri.data) {
+                        return NGX_HTTP_PARSE_INVALID_REQUEST;
+                    }
+                    if (*u == '/') {
+                        u++;
+                        break;
+                    }
                     u--;
                 }
                 break;