[CLA-2003:632] Conectiva Security Announcement - apache

From: Conectiva Updates (secure_at_conectiva.com.br)
Date: 04/30/03

  • Next message: Valdis.Kletnieks_at_vt.edu: "Re: Portable OpenSSH: Dangerous AIX linker behavior (aixgcc.adv)"
    Date: Wed, 30 Apr 2003 14:49:03 -0300
    To: conectiva-updates@papaleguas.conectiva.com.br, lwn@lwn.net, bugtraq@securityfocus.com, security-alerts@linuxsecurity.com, linsec@lists.seifried.org
    
    

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    - --------------------------------------------------------------------------
    CONECTIVA LINUX SECURITY ANNOUNCEMENT
    - --------------------------------------------------------------------------

    PACKAGE : apache
    SUMMARY : Denial of service vulnerability
    DATE : 2003-04-30 14:48:00
    ID : CLA-2003:632
    RELEVANT
    RELEASES : 9

    - -------------------------------------------------------------------------

    DESCRIPTION
     Apache[1] is the most popular webserver in use today.
     
     This update fixes two security vulnerabilities:
     
     1. Denial of service (CAN-2003-0132)[3]
     David Endler from iDefense reported[2] a denial of service condition
     that affects the apache 2.0 branch which affects all unpatched
     servers up to and including version 2.0.44.
     
     There is a memory leak in these apache versions which can be remotely
     triggered by sending large chunks of consecutive linefeed characters.
     Each linefeed will cause the server to allocate 80 bytes of memory.
     
     A remote attacker can keep sending these simple requests until the
     server's memory is exhausted.
     
     2. File descriptor leak[5]
     Christian Kratzer and Bjoern A. Zeeb identified several file
     descriptor leaks to child processes, such as CGI scripts, which could
     consitute a security threat on servers that run untrusted CGI
     scripts.
     
     The Apache HTTP Server Project released[4] Apache version 2.0.45 to
     address these issues, and this is the version provided via this
     update.

    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.idefense.com/advisory/04.08.03.txt
     3. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0132
     4. http://www.apache.org/dist/httpd/Announcement2.html
     5. http://nagoya.apache.org/bugzilla/show_bug.cgi?id=17206

    UPDATED PACKAGES
    ftp://atualizacoes.conectiva.com.br/9/SRPMS/apache-2.0.45-28790U90_1cl.src.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-2.0.45-28790U90_1cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-devel-2.0.45-28790U90_1cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-doc-2.0.45-28790U90_1cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/apache-htpasswd-2.0.45-28790U90_1cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr-devel-2.0.45-28790U90_1cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr-devel-static-2.0.45-28790U90_1cl.i386.rpm
    ftp://atualizacoes.conectiva.com.br/9/RPMS/libapr0-2.0.45-28790U90_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

    - -------------------------------------------------------------------------
    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

    - -------------------------------------------------------------------------
    All our advisories and generic update instructions can be viewed at
    http://distro.conectiva.com.br/atualizacoes/?idioma=en

    - -------------------------------------------------------------------------
    Copyright (c) 2003 Conectiva Inc.
    http://www.conectiva.com

    - -------------------------------------------------------------------------
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  • Next message: Valdis.Kletnieks_at_vt.edu: "Re: Portable OpenSSH: Dangerous AIX linker behavior (aixgcc.adv)"

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