From 0f5bd9d1714b54f3c79d8e3516e91cb5f905565f Mon Sep 17 00:00:00 2001
From: Eric Covener <covener@apache.org>
Date: Mon, 23 Jan 2012 15:05:08 +0000
Subject: [PATCH] SECURITY: CVE-2012-0053 (cve.mitre.org) Fix an issue in error
 responses that could expose "httpOnly" cookies when no custom ErrorDocument
 is specified for status code 400.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1234838 13f79535-47bb-0310-9956-ffa450edef68
---
 CHANGES           |  5 +++++
 server/protocol.c | 24 ++++++++++++------------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/CHANGES b/CHANGES
index 85ff373283..4ceb1e4e20 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,11 @@
                                                          -*- coding: utf-8 -*-
 Changes with Apache 2.4.1
 
+  *) SECURITY: CVE-2012-0053 (cve.mitre.org)
+     Fix an issue in error responses that could expose "httpOnly" cookies
+     when no custom ErrorDocument is specified for status code 400.  
+     [Eric Covener]
+
   *) configure: Disable modules at configure time if a prerequisite module
      is not enabled. PR 52487. [Stefan Fritsch]
 
diff --git a/server/protocol.c b/server/protocol.c
index 11a82e1acb..3635ce049f 100644
--- a/server/protocol.c
+++ b/server/protocol.c
@@ -753,12 +753,12 @@ AP_DECLARE(void) ap_get_mime_headers_core(request_rec *r, apr_bucket_brigade *bb
                 /* insure ap_escape_html will terminate correctly */
                 field[len - 1] = '\0';
                 apr_table_setn(r->notes, "error-notes",
-                               apr_pstrcat(r->pool,
+                               apr_psprintf(r->pool,
                                            "Size of a request header field "
                                            "exceeds server limit.<br />\n"
-                                           "<pre>\n",
-                                           ap_escape_html(r->pool, field),
-                                           "</pre>\n", NULL));
+                                           "<pre>\n%.*s\n</pre>\n", 
+                                           field_name_len(field), 
+                                           ap_escape_html(r->pool, field)));
                 ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00561)
                               "Request header exceeds LimitRequestFieldSize: "
                               "%.*s", field_name_len(field), field);
@@ -782,13 +782,13 @@ AP_DECLARE(void) ap_get_mime_headers_core(request_rec *r, apr_bucket_brigade *bb
                      * overflow (last_field) as the field with the problem
                      */
                     apr_table_setn(r->notes, "error-notes",
-                                   apr_pstrcat(r->pool,
+                                   apr_psprintf(r->pool,
                                                "Size of a request header field "
                                                "after folding "
                                                "exceeds server limit.<br />\n"
-                                               "<pre>\n",
-                                               ap_escape_html(r->pool, last_field),
-                                               "</pre>\n", NULL));
+                                               "<pre>\n%.*s\n</pre>\n", 
+                                               field_name_len(last_field), 
+                                               ap_escape_html(r->pool, last_field)));
                     ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00562)
                                   "Request header exceeds LimitRequestFieldSize "
                                   "after folding: %.*s",
@@ -827,13 +827,13 @@ AP_DECLARE(void) ap_get_mime_headers_core(request_rec *r, apr_bucket_brigade *bb
                 if (!(value = strchr(last_field, ':'))) { /* Find ':' or    */
                     r->status = HTTP_BAD_REQUEST;      /* abort bad request */
                     apr_table_setn(r->notes, "error-notes",
-                                   apr_pstrcat(r->pool,
+                                   apr_psprintf(r->pool,
                                                "Request header field is "
                                                "missing ':' separator.<br />\n"
-                                               "<pre>\n",
+                                               "<pre>\n%.*s</pre>\n", 
+                                               (int)LOG_NAME_MAX_LEN,
                                                ap_escape_html(r->pool,
-                                                              last_field),
-                                               "</pre>\n", NULL));
+                                                              last_field)));
                     ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00564)
                                   "Request header field is missing ':' "
                                   "separator: %.*s", (int)LOG_NAME_MAX_LEN,
-- 
2.40.0