[CLA-2003:691] Conectiva Security Announcement - php4
Date: Tue, 8 Jul 2003 17:03:36 -0300
From: Conectiva Updates <[email protected]>
To: [email protected], [email protected],
Subject: [CLA-2003:691] Conectiva Security Announcement - php4
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CONECTIVA LINUX SECURITY ANNOUNCEMENT
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PACKAGE : php4
SUMMARY : New PHP4 packages with security fixes and enhancements
DATE : 2003-07-08 17:03:00
ID : CLA-2003:691
RELEVANT
RELEASES : 7.0, 8, 9
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DESCRIPTION
PHP[1] is a very popular scripting language used by web servers to
offer dynamic content.
This announcement updates PHP4 to the 4.3.2 version and contains,
among others, the following fixes:
- one of the memory allocation functions was modified to prevent
integer overflow vulnerabilities. Sir Mordred has reported some
vulnerable functions which try to allocate memory without checking
for integer overflows: array_pad()[2], str_repeat()[3] and
socket_iovec_alloc()[4]. In order to exploit this vulnerability,
however, an attacker would need to be able to manipulate the
parameters used in these functions, which is application specific.
- transparent session ID cross site scripting (CAN-2003-0442)[5]:
this vulnerability is only present if the "session.use_trans_sid"
parameter in the php.ini configuration file is enabled. The default
for this parameter is for it to be disabled. Previous PHP versions
did not sanitize the session ID and this would allow cross site
scripting attacks.
- fix for some socket functions[6]: also reported by Sir Mordred, the
socket_recv() and socket_recvfrom() functions can be used to crash
PHP if supplied with negative arguments. Again, in order to exploit
this vulnerability, it is necessary for the attacker to be able to
supply his/her own arguments to these functions, which is application
specific.
- new libimap4 package: while building packages for Conectiva Linux
9, it was realized that the imap libraries which were being used did
not have proper Kerberos support and this was breaking the PHP build.
This has been fixed and the new php4-imap package contains a
dependency for the fixed libimap4 package.
- new documentation packages: besides being updated for the 4.3.2
version, there are also two new documentation packages: Brazilian
portuguese and Spanish, taken from the project's site.
- new packages for Conectiva Linux 8: two new packages have been
added to Conectiva Linux 8: php4-mcrypt (for cryptographic functions)
and php4-snmp (for snmp-related functions).
Important note for Conectiva Linux 7.0 and 8 users:
Please note that PHP now ships with the "register_globals" parameter
set to "Off" by default. Some applications, such as the Imp 2.x
webmail, need this parameter to be set to "On" in order to work
properly. If your application needs this parameter active, please
edit php's configuration file (/etc/php4/apache/php.ini for DSO,
/etc/php4/cgi/php.ini for CGI). If possible, consider changing the
application so that it does not need "register_globals = On", because
it makes it easier to introduce security vulnerabilities in PHP
scripts. The http://www.php.net/register_globals page contains a
thorough discussion of this issue.
SOLUTION
It is recommended that all PHP users upgrade their packages.
IMPORTANT: if PHP is being used as an Apache module, the web server
has to be restarted after the upgrade if it was already running. To
do so, please run, as root:
service httpd stop
(wait a few seconds and check with "ps ax|grep httpd" if there are
any httpd processes running. On a busy webserver this could take a
little longer.)
service httpd start
REFERENCES
1. http://www.php.net
2. http://marc.theaimsgroup.com/?l=bugtraq&m=104931384806788&w=2
3. http://marc.theaimsgroup.com/?l=bugtraq&m=104931355406416&w=2
4. http://marc.theaimsgroup.com/?l=bugtraq&m=104860818613543&w=2
5. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0442
6. http://marc.theaimsgroup.com/?l=bugtraq&m=104869828526885&w=2
7. http://www.php.net/register_globals
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/php4-4.3.2-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/mod_php4-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-devel-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-doc-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-doc-es-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-doc-pt_BR-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-imap-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-ldap-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-mysql-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-odbc-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/php4-pgsql-4.3.2-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/php4-4.3.2-1U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/mod_php4-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-devel-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-doc-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-doc-es-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-doc-pt_BR-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-imap-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-ldap-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-mcrypt-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-mysql-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-odbc-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-pgsql-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/php4-snmp-4.3.2-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/uw-imap-2002b-26900U90_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/php4-4.3.2-26997U90_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-devel-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-doc-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-doc-es-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-doc-pt_BR-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-imap-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-ldap-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-mcrypt-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-mysql-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-odbc-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-pgsql-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/php4-snmp-4.3.2-26997U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/imap-2002b-26900U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libimap-devel-2002b-26900U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libimap-devel-static-2002b-26900U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libimap4-2002b-26900U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/uw-imap-doc-2002b-26900U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/uw-imap-server-2002b-26900U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/uw-pop-server-2002b-26900U90_1cl.i386.rpm
ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:
- run: apt-get update
- after that, execute: apt-get upgrade
Detailed instructions reagarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en
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All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en
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All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en
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Copyright (c) 2003 Conectiva Inc.
http://www.conectiva.com
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