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TUCoPS :: Linux :: Conectiva :: bt422.txt

apache CLA-2003:661





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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : apache
SUMMARY   : Apache 2 vulnerability
DATE      : 2003-06-16 18:27:00
ID        : CLA-2003:661
RELEVANT
RELEASES  : 9

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DESCRIPTION
 Apache[1] is the most popular webserver in use today.
 
 This update addresses two security vulnerabilities which have been
 fixed in the recently released[2] 2.0.46 version:
 
 1) CAN-2003-0245[3]
 iDefense published[5] an advisory about a vulnerability in the APR
 library used by Apache 2. This library contains a vulnerability in
 the apr_psprintf() function which could be used to make apache
 reference invalid memory.
 
 The most immediate impact of this vulnerability is a Denial of
 Service condition. Arbitrary command execution remains a possibility,
 but is deemed to be difficult to achieve outside a controlled
 environment.
 
 The packages provided with this update contain a fix for this
 vulnerability.
 
 2) CAN-2003-0189[4]
 A problem with the build configuration scripts caused the Apache
 basic authentication module to not be thread-safe. Systems running a
 threaded server would then be vulnerable to a Denial of Service
 condition when authenticating users using this module. Apache in
 Conectiva Linux 9 is *not* vulnerable to this issue because it is not
 built with threads support. However, the packages available through
 this update have been patched to fix this problem to allow users to
 recompile Apache with threads support in the event they choose to do
 so.


SOLUTION
 It is recommended that all Apache users upgrade their packages.
 
 IMPORTANT: it is necessary to manually restart the httpd server after
 upgrading the packages. In order to do this, execute the following as
 root:
 
 service apache 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 apache start
 
 
 REFERENCES
 1. http://httpd.apache.org/
 2. http://www.apache.org/dist/httpd/Announcement2.html
 3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0245
 4. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0189
 5. http://www.idefense.com/advisory/05.30.03.txt


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/9/SRPMS/apache-2.0.45-28790U90_2cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-devel-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-doc-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-htpasswd-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr-devel-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr-devel-static-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr0-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_auth_ldap-2.0.45-28790U90_2cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_dav-2.0.45-28790U90_2cl.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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subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
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