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TUCoPS :: Web :: Apache :: bt717.txt

apache DoS vulns (Conectiva)





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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : apache
SUMMARY   : Denial of service vulnerabilities
DATE      : 2003-07-24 14:16:00
ID        : CLA-2003:704
RELEVANT
RELEASES  : 7.0, 8

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DESCRIPTION
 Apache[1] is the most popular webserver in use today. 
 
 The Apache Software Foundation and The Apache Server Project
 released[2] a new version of the Apache webserver which addresses the
 following security vulnerabilities:
 
 1. Rotatelogs program (CAN-2003-0460)[3]
 The Hitachi Incident Response team reported that, on Win32 and OS/2,
 the rotatelogs support program did not ignore special control
 characters received over the pipe. These characters could cause the
 program to quit logging and exit. This issue does not affect
 Conectiva Linux.
 
 2. Denial of service (VU #379828)[4]
 Ryan O'Neill reported that it is possible to make the httpd server
 enter infinite loops and crash under certain circumstances. A new
 configuration directive has been created (LimitInternalRecursion) to
 avoid these infinite loops and abort the request which caused them if
 the configured limit has been reached.
 
 3. File descriptor leak
 Leaks of several file descriptors to child processes, such as CGI
 scripts, were fixed.


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 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 apache start 
 
 
 REFERENCES
 1. http://httpd.apache.org/
 2. http://www.apache.org/dist/httpd/Announcement.html
 3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0460
 4. http://nagoya.apache.org/bugzilla/show_bug.cgi?id=19753


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/7.0/SRPMS/apache-1.3.28-1U70_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/apache-1.3.28-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/apache-devel-1.3.28-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/7.0/RPMS/apache-doc-1.3.28-1U70_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/apache-1.3.28-1U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/apache-1.3.28-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/apache-devel-1.3.28-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/RPMS/apache-doc-1.3.28-1U80_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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subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
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