Apache Web Server May Display Directory Index Listings Even if Directory Listings Are Disabled
SecurityTracker Alert ID: 1001083|
SecurityTracker URL: http://securitytracker.com/id/1001083
(Links to External Site)
Date: Mar 13 2001
Disclosure of user information|
Fix Available: Yes Vendor Confirmed: Yes |
Version(s): prior to 1.3.19|
The Apache Software Foundation announced the release of version 1.3.19 of the Apache HTTP web server to fix a security problem which could lead to a directory listing being displayed instead of an error message.|
According to the report, the default Apache installation could lead to the mod_negotiation and mod_dir/mod_autoindex modules displaying a directory listing to a remote user instead of the index.html.* files. This may occur if a very long path is created using many slashes. In the fixed version, a "403 FORBIDDEN" error message is returned.
A remote user could obtain directory listings of web directories even if directory index listings are disabled.|
The vendor considers Apache 1.3.19 "to be the best version of Apache available" and the vendor strongly recommends that users upgrade to this version, especially users of the 1.1.x and 1.2.x family.|
Apache 1.3.19 is available for download from:
Binary distributions are available from:
Vendor URL: apache.org (Links to External Site)
Boundary error, Input validation error|
|Underlying OS: Linux (Any), UNIX (Any), Windows (Any)|
This archive entry has one or more follow-up message(s) listed below.|
Source Message Contents
Subject: FORW: [ANNOUNCE] Apache 1.3.19 Released|
Perhaps I missed it, but I don't recall seeing this vulnerability discussed
on Bugtraq. They don't make it clear which pre-1.3.19 versions of Apache
are affected. I've emailed Martin Kraemer for clarification and will post
here when/if he responds.
------- Forwarded Message
Date: Mon, 12 Mar 2001 02:16:16 -0800
From: Martin Kraemer <firstname.lastname@example.org>
Subject: [ANNOUNCE] Apache 1.3.19 Released
Organization: Apache Software Foundation
[Sorry for the late announcement. The package is already available since 01-Mar-2001. Martin]
Apache 1.3.19 Released
The Apache Software Foundation and The Apache Server Project are
pleased to announce the release of version 1.3.19 of the Apache HTTP
server. (Version 1.3.18 was not released due to an incorrect fix
addressing hostnames with url-escaped characters. A corrected fix will
be included in the next release)
This version of Apache is primarily a security fix release
addressing a problem which could lead to a directory listing being
displayed in place of an error message. Also, it fixes
some broken functionality present in the 1.3.17 release and
various Win32 issues.
A summary of the new features is given at the end of this document.
We consider Apache 1.3.19 to be the best version of Apache available
and we strongly recommend that users of older versions, especially of
the 1.1.x and 1.2.x family, upgrade as soon as possible. No further
releases will be made in the 1.2.x family.
Apache 1.3.19 is available for download from
Please see the CHANGES_1.3 file in the same directory for a full list
Binary distributions are available from
The source and binary distributions are also available via any of the
mirrors listed at
As of Apache 1.3.12 binary distributions contain all standard Apache
modules as shared objects (if supported by the platform) and include
full source code. Installation is easily done by executing the
included install script. See the README.bindist and INSTALL.bindist
files for a complete explanation. Please note that the binary
distributions are only provided for your convenience and current
distributions for specific platforms are not always available.
As of Apache 1.3.17 the Win32 binary distribution is now based on the
Microsoft Installer (.MSI) technology. This change occured in order
to resolve the many problems WinME and Win2K users experienced with
the older InstallShield-based installer .exe file. Development
continues to make this new installation method more robust, questions
should be directed at the news:comp.infosystems.www.servers.ms-windows
news group. Apache 1.3.17 for Win32 also marked the first 'initial
release quality' version available for Win32, and users are strongly
discouraged from using the older 'beta quality releases'.
For an overview of new features introduced after 1.2 please see
In general, Apache 1.3 offers several substantial improvements over
version 1.2, including better performance, reliability and a wider
range of supported platforms, including Windows 95/98 and NT (which
fall under the "Win32" label).
Apache is the most popular web server in the known universe; over half
of the servers on the Internet are running Apache or one of its
IMPORTANT NOTE FOR WIN32 USERS: Over the years, many users have come
to trust Apache as a secure and stable server. It must be realized
that the current Win32 code has not yet reached the levels of the Unix
version, but is of acceptable quality. Any Win32 stability or security
problems do not impact, in any way, Apache on other platforms.
Apache 1.3.19 Major changes
The primary security fix is:
* The default installation could lead mod_negotiation and mod_dir or
mod_autoindex to display a directory listing instead of the
multiview'ed index.html.* files, if a very long path was created
artificially by using many slashes. Now 403 FORBIDDEN is returned.
The bug fixes are:
* The ServerRoot directive now removes trailing slashes.
* Restore functionality broken by the mod_rewrite security fix:
The mod_rewrite string arithmetic is corrected for rewrite map.
* Some possible segfault conditions have been fixed.
* Under certain circumstances, Apache did not supply the
right response headers when requiring authentication.
The main new features include:
* New configuration error reporting if the UserDir argument is set
to a relative path on Win32 or Netware [which do not support home
directories], or a relative path on any platform if that path
includes the '*' username substitution.
Selected new features that relate to Windows platforms:
* Apache on Win9x now ensures the service is stopped before removal.
* Test httpd.conf (-t) now holds the console open on "SYNTAX OK".
* Apache/Win32 no longer holds open the console on error unless
it was invoked from a shortcut with the -w option.
* mod_user was significantly refactored to assure that the UserDir
directive is parsed effectively the same across platforms, fixing
a UserDir bug introduced in 1.3.17 on the Win32 platform.
Selected new features relating to other platforms:
* Netware problems with file extension truncatation are resolved.
* Netware recognizes the SERVER/VOLUME:/PATH/FILE filename pattern.
* Netware mod_tls properly disables nagle for SSL connections,
and properly negotiates SSL based on the port.
* Startup and Shutdown issues were addressed on TPF.
<Martin.Kraemer@Fujitsu-Siemens.com> | Fujitsu Siemens
<email@example.com> | 81730 Munich, Germany
You have received this mail because you are subscribed to the
firstname.lastname@example.org mailing list.
To unsubscribe, e-mail: email@example.com
For additional commands, e-mail: firstname.lastname@example.org
------- End of Forwarded Message
Dan Harkless | To prevent SPAM contamination, please
email@example.com | do not mention this private email
SpeedGate Communications, Inc. | address in Usenet posts. Thank you.