August 2005
Gentoo Security Advisories for Tikiwiki, Apache, Tor and libpcre
ID: 00729
Ref: 676/2005
Date: 26 August 2005:11:49:44
Version: 1
Title: Gentoo Security Advisories for Tikiwiki, Apache, Tor and libpcre
Abstract: New advisory information released by Gentoo
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo
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Gentoo Linux Security Advisory GLSA 200508-14
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http://security.gentoo.org/
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Severity: High
Title: TikiWiki, eGroupWare: Arbitrary command execution through
XML-RPC
Date: August 24, 2005
Bugs: #102374, #102377
ID: 200508-14
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Synopsis
========
TikiWiki and eGroupWare both include PHP XML-RPC code vulnerable to
arbitrary command execution.
Background
==========
TikiWiki is a full featured Free Software Wiki, CMS and Groupware
written in PHP. eGroupWare is a web-based collaboration software suite.
Both TikiWiki and eGroupWare include a PHP library to handle XML-RPC
requests.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-apps/tikiwiki < 1.8.5-r2 >= 1.8.5-r2
2 www-apps/egroupware < 1.0.0.009 >= 1.0.0.009
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
The XML-RPC library shipped in TikiWiki and eGroupWare improperly
handles XML-RPC requests and responses with malformed nested tags.
Impact
======
A remote attacker could exploit this vulnerability to inject arbitrary
PHP script code into eval() statements by sending a specially crafted
XML document to TikiWiki or eGroupWare.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All TikiWiki users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/tikiwiki-1.8.5-r2"
All eGroupWare users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-apps/egroupware-1.0.0.009"
References
==========
[ 1 ] CAN-2005-2498
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2498
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200508-14.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 2005 Gentoo Foundation, 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/2.0
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Gentoo Linux Security Advisory GLSA 200508-15
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http://security.gentoo.org/
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Severity: Normal
Title: Apache 2.0: Denial of Service vulnerability
Date: August 25, 2005
Bugs: #102991
ID: 200508-15
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Synopsis
========
A bug in Apache may allow a remote attacker to perform a Denial of
Service attack.
Background
==========
The Apache HTTP Server Project is a featureful, freely-available HTTP
(Web) server.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-www/apache < 2.0.54-r9 >= 2.0.54-r9
< 2.0
Description
===========
Filip Sneppe discovered that Apache improperly handles byterange
requests to CGI scripts.
Impact
======
A remote attacker may access vulnerable scripts in a malicious way,
exhausting all RAM and swap space on the server, resulting in a Denial
of Service of the Apache server.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All apache users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-www/apache-2.0.54-r9"
References
==========
[ 1 ] ASF Bugzilla Bug 29962
http://issues.apache.org/bugzilla/show_bug.cgi?id=29962
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200508-15.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 2005 Gentoo Foundation, 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/2.0
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Gentoo Linux Security Advisory GLSA 200508-16
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http://security.gentoo.org/
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Severity: Low
Title: Tor: Information disclosure
Date: August 25, 2005
Bugs: #102245
ID: 200508-16
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Synopsis
========
A flaw in Tor leads to the disclosure of information and the loss of
anonymity, integrity and confidentiality.
Background
==========
Tor is an implementation of second generation Onion Routing, a
connection-oriented anonymizing communication service.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/tor < 0.1.0.14 >= 0.1.0.14
Description
===========
The Diffie-Hellman implementation of Tor fails to verify the
cryptographic strength of keys which are used during handshakes.
Impact
======
By setting up a malicious Tor server and enticing users to use this
server as first hop, a remote attacker could read and modify all
traffic of the user.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Tor users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/tor-0.1.0.14"
References
==========
[ 1 ] CAN-2005-2643
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2643
[ 2 ] Tor Security Announcement
http://archives.seul.org/or/announce/Aug-2005/msg00002.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200508-16.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 2005 Gentoo Foundation, 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/2.0
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Gentoo Linux Security Advisory GLSA 200508-17
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http://security.gentoo.org/
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Severity: High
Title: libpcre: Heap integer overflow
Date: August 25, 2005
Bugs: #103337
ID: 200508-17
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Synopsis
========
libpcre is vulnerable to a heap integer overflow, possibly leading to
the execution of arbitrary code.
Background
==========
libpcre is a library providing functions for Perl-compatible regular
expressions.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libpcre < 6.3 >= 6.3
Description
===========
libpcre fails to check certain quantifier values in regular expressions
for sane values.
Impact
======
An attacker could possibly exploit this vulnerability to execute
arbitrary code by sending specially crafted regular expressions to
applications making use of the libpcre library.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All libpcre users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libpcre-6.3"
References
==========
[ 1 ] CAN-2005-2491
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2491
[ 2 ] SecurityTracker Alert ID 1014744
http://www.securitytracker.com/alerts/2005/Aug/1014744.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200508-17.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 2005 Gentoo Foundation, 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/2.0