-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------------------------------------------------------------------------- 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 - ------------------------------------------------------------------------- subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE+sAyO42jd0JmAcZARAoRzAJ4/YiZhEH/a5PKSls5bXKbPDI0bSwCdFjWO yLHZiBj+wWOkv+2DLxpHjHI= =AIKW -----END PGP SIGNATURE-----
