Apache Web Server Bugs Permit Cross-Site Scripting and Information Disclosure Attacks
SecurityTracker Alert ID: 1027421|
SecurityTracker URL: http://securitytracker.com/id/1027421
(Links to External Site)
Date: Aug 21 2012
Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): prior to 2.4.3|
Two vulnerabilities were reported in Apache. A remote user can conduct cross-site scripting attacks. A remote user can obtain potentially sensitive information.|
mod_negotiation does not properly filter HTML code from user-supplied input in filenames in a variant list [CVE-2012-2687]. On sites that allow remote users to upload files to a location where MultiViews are enabled, a remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the Apache software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
mod_proxy_ajp and mod_proxy_http do not properly close connections [CVE-2012-3502]. A remote user may obtain a response intended for a different connection.
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Apache software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.|
A remote user can obtain information intended for a different connection.
The vendor has issued a fix (2.4.3).|
The vendor's advisory is available at:
Vendor URL: httpd.apache.org/ (Links to External Site)
Access control error, Input validation error, State error|
Linux (Any), UNIX (Any), Windows (Any)|
This archive entry has one or more follow-up message(s) listed below.|
Source Message Contents
Date: Tue, 21 Aug 2012 07:57:02 -0400|
Subject: [ANNOUNCEMENT] Apache HTTP Server 2.4.3 Released
Apache HTTP Server 2.4.3 Released
The Apache Software Foundation and the Apache HTTP Server Project
are pleased to announce the release of version 2.4.3 of the Apache
HTTP Server ("Apache"). This version of Apache is our 3rd GA
release of the new generation 2.4.x branch of Apache HTTPD and
represents fifteen years of innovation by the project, and is
recommended over all previous releases. This version of Apache is
principally a security and bug fix release, including the following
2 security fixes:
*) SECURITY: CVE-2012-3502 (cve.mitre.org)
mod_proxy_ajp, mod_proxy_http: Fix an issue in back end
connection closing which could lead to privacy issues due
to a response mixup. PR 53727.
*) SECURITY: CVE-2012-2687 (cve.mitre.org)
mod_negotiation: Escape filenames in variant list to prevent an
possible XSS for a site where untrusted users can upload files to
a location with MultiViews enabled.
Apache HTTP Server 2.4.3 is available for download from:
Apache 2.4 offers numerous enhancements, improvements, and performance
boosts over the 2.2 codebase. For an overview of new features
introduced since 2.4 please see:
Please see the CHANGES_2.4 file, linked from the download page, for a
full list of changes. A condensed list, CHANGES_2.4.3 includes only
those changes introduced since the prior 2.4 release. A summary of all
of the security vulnerabilities addressed in this and earlier releases
This release requires the Apache Portable Runtime (APR) version 1.4.x
and APR-Util version 1.4.x. The APR libraries must be upgraded for all
features of httpd to operate correctly.
This release builds on and extends the Apache 2.2 API. Modules written
for Apache 2.2 will need to be recompiled in order to run with Apache
2.4, and require minimal or no source code changes.
When upgrading or installing this version of Apache, please bear in mind
that if you intend to use Apache with one of the threaded MPMs (other
than the Prefork MPM), you must ensure that any modules you will be
using (and the libraries they depend on) are thread-safe.
NOTE to Windows users: The issues with AcceptFilter None replacing
Win32DisableAcceptEx appears to have resolved starting with version
2.4.3 make Apache httpd 2.4.x suitable for Windows servers.