(Gentoo Issues Fix) Apache mod_digest May Validate Replayed Client Responses
|
|
SecurityTracker Alert ID: 1010302 |
|
SecurityTracker URL: http://securitytracker.com/id/1010302
|
|
CVE Reference:
CAN-2003-0987
(Links to External Site)
|
Date: May 26 2004
|
Impact:
User access via network
|
Fix Available: Yes Vendor Confirmed: Yes
|
Version(s): priot to 1.3.31
|
Description:
A vulnerability was reported in Apache mod_digest. The software may not correctly validate a client response, allowing a remote user to replay a response to gain access to an ostensibly protected system.
It is reported that mod_digest does not properly verify the nonce of a client response. A remote user may be able to replay a response to be authenticated in certain cases.
The report indicates that a remote user can capture the response from another section of the target web site (or another web site entirely). If the target user's username+password combination is the same and the realm is the same, the remote user can reportedly replay the digest response to be successfully authenticated.
Dirk-Willem van Gulik reported this flaw.
|
Impact:
A remote user may be able to be authenticated in certain cases.
|
Solution:
Gentoo has released a fix and indicates that all users should upgrade to the latest stable version of Apache 1.3.
# emerge sync
# emerge -pv ">=net-www/apache-1.3.31"
# emerge ">=net-www/apache-1.3.31"
|
Vendor URL: www.mail-archive.com/dev@httpd.apache.org/msg19007.html (Links to External Site)
|
Cause:
Authentication error
|
Underlying OS:
Linux (Gentoo)
|
|
Message History:
This archive entry is a follow-up to the message listed below.
|
Source Message Contents
|
Date: Wed, 26 May 2004 12:32:40 -0400
Subject: [gentoo-announce] [ GLSA 200405-22 ] Apache 1.3: Multiple vulnerabilities
|
--TXIPBuAs4GDcsx9K
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 200405-22
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal
Title: Apache 1.3: Multiple vulnerabilities
Date: May 26, 2004
Bugs: #51815
ID: 200405-22
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis
========
Several security vulnerabilites have been fixed in the latest release
of Apache 1.3.
Background
==========
The Apache HTTP Server Project is an effort to develop and maintain an
open-source HTTP server for modern operating systems. The goal of this
project is to provide a secure, efficient and extensible server that
provides services in tune with the current HTTP standards.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-www/apache < 1.3.31 >= 1.3.31
Description
===========
On 64-bit big-endian platforms, mod_access does not properly parse
Allow/Deny rules using IP addresses without a netmask which could
result in failure to match certain IP addresses.
Terminal escape sequences are not filtered from error logs. This could
be used by an attacker to insert escape sequences into a terminal
emulater vulnerable to escape sequences.
mod_digest does not properly verify the nonce of a client response by
using a AuthNonce secret. This could permit an attacker to replay the
response of another website. This does not affect mod_auth_digest.
On certain platforms there is a starvation issue where listening
sockets fails to handle short-lived connection on a rarely-accessed
listening socket. This causes the child to hold the accept mutex and
block out new connections until another connection arrives on the same
rarely-accessed listening socket thus leading to a denial of service.
Impact
======
These vulnerabilities could lead to attackers bypassing intended access
restrictions, denial of service, and possibly execution of arbitrary
code.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All users should upgrade to the latest stable version of Apache 1.3.
# emerge sync
# emerge -pv ">=net-www/apache-1.3.31"
# emerge ">=net-www/apache-1.3.31"
References
==========
[ 1 ] CAN-2003-0993
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0993
[ 2 ] CAN-2003-0020
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0020
[ 3 ] CAN-2003-0987
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0987
[ 4 ] CAN-2004-0174
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0174
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200405-22.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
=======
Copyright 2004 Gentoo Technologies, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/1.0
--TXIPBuAs4GDcsx9K
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)
iD8DBQFAtMaoJPpRNiftIEYRAhlqAKCGbGyE2ZzmKQdHDpD66anIG+XBWwCfetKw
Y2eA3zeETqNOBYe70mOoLok=
=1tcY
-----END PGP SIGNATURE-----
--TXIPBuAs4GDcsx9K--
|
|
