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CONECTIVA LINUX SECURITY ANNOUNCEMENT 
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PACKAGE   : apache
SUMMARY   : Denial of service vulnerabilities
DATE      : 2003-07-21 18:34:00
ID        : CLA-2003:698
RELEVANT
RELEASES  : 9

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DESCRIPTION
 Apache[1] is the most popular webserver in use today.
 
 This update addresses the following issues:
 
 1. SSL renegotiations (CAN-2003-0192 [2])
 Certain sequences of per-directory renegotiations and the
 SSLCipherSuite directive being used to upgrade from a weak
 ciphersuite to a strong one could result in the weak ciphersuite
 being used in place of the strong one.
 
 2. Denial of service (CAN-2003-0253 [3])
 Saheed Akhtar reported that a denial of service condition exists in
 the prefork MPM when accept() on rarely accessed port returns certain
 errors. The prefork MPM is the default mode for Apache as shipped
 with Conectiva Linux 9.
 
 3. Ftp proxy denial of service (CAN-2003-0254 [4])
 Yoshioka Tsuneo reported a denial of service condition in the ftp
 proxy which happens when the target host is IPv6 but the proxy server
 itself cannot create an IPv6 socket.
 
 4. Denial of service (VU#379828 [5])
 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.


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://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0192
 3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0253
 4. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0254
 5. http://nagoya.apache.org/bugzilla/show_bug.cgi?id=19753


UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/9/SRPMS/apache-2.0.45-28790U90_3cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-devel-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-doc-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-htpasswd-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr-devel-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr-devel-static-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr0-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_auth_ldap-2.0.45-28790U90_3cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_dav-2.0.45-28790U90_3cl.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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