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Home : Advisories : mod_rewrite and Host header vulnerability

Title: mod_rewrite and Host header vulnerability
Released by: Conectiva
Date: 11th October 2000
Printable version: Click here
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CONECTIVA LINUX SECURITY ANNOUNCEMENT

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PACKAGE   : apache

SUMMARY   : mod_rewrite and Host header vulnerability

DATE      : 2000-10-11 16:19:00

RELEVANT

RELEASES  : 4.0, 4.0es, 4.1, 4.2, 5.0, prg gráficos, ecommerce, 5.1



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DESCRIPTION

 There are two vulnerabilities in the Apache web server as shipped

 with Conectiva Linux.



 1) Under certain configurations, the mod_rewrite module could be used

 to access any file on the server, provided that filesystem access

 rights permitted that. Now the mod_rewrite module makes a one-pass

 expansion and is no longer vulnerable to this.



 2) The other vulnerability is regarding the handling of Host: headers

 in mass virtual hosting configurations. The check for dot (".")

 charactes in that header was not complete and could permit access to

 a parent directory.





SOLUTION

 It is recommended that users using mod_rewrite or with virtual

 hosting update their servers.

 Users of Conectiva Linux 4.1 and 4.2 will also find apache-1.3.12 on

 the FTP site. That package should be used for those who upgraded to

 1.3.12 because of the IMP/HORDE advisory a while ago.





DIRECT DOWNLOAD LINKS TO THE UPDATED PACKAGES

http://atualizacoes.conectiva.com.br/4.0/SRPMS/apache-1.3.6-16cl.src.rpm

http://atualizacoes.conectiva.com.br/4.0/i386/apache-1.3.6-16cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.0/i386/apache-devel-1.3.6-16cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.0es/SRPMS/apache-1.3.6-16cl.src.rpm

http://atualizacoes.conectiva.com.br/4.0es/i386/apache-1.3.6-16cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.0es/i386/apache-devel-1.3.6-16cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.1/SRPMS/apache-1.3.9-17cl.src.rpm

http://atualizacoes.conectiva.com.br/4.1/i386/apache-1.3.9-17cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.1/i386/apache-devel-1.3.9-17cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.2/SRPMS/apache-1.3.9-17cl.src.rpm

http://atualizacoes.conectiva.com.br/4.2/i386/apache-1.3.9-17cl.i386.rpm

http://atualizacoes.conectiva.com.br/4.2/i386/apache-devel-1.3.9-17cl.i386.rpm

http://atualizacoes.conectiva.com.br/5.0/SRPMS/apache-1.3.12-14cl.src.rpm

http://atualizacoes.conectiva.com.br/5.0/i386/apache-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/5.0/i386/apache-doc-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/5.0/i386/apache-devel-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/5.1/SRPMS/apache-1.3.12-14cl.src.rpm

http://atualizacoes.conectiva.com.br/5.1/i386/apache-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/5.1/i386/apache-doc-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/5.1/i386/apache-devel-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/ferramentas/ecommerce/SRPMS/apache-1.3.12-14cl.src.rpm

http://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/apache-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/apache-doc-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/ferramentas/ecommerce/i386/apache-devel-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/ferramentas/graficas/SRPMS/apache-1.3.12-14cl.src.rpm

http://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/apache-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/apache-doc-1.3.12-14cl.i386.rpm

http://atualizacoes.conectiva.com.br/ferramentas/graficas/i386/apache-devel-1.3.12-14cl.i386.rpm





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All packages are signed with Conectiva's GPG key. The key can be

obtained at http://www.conectiva.com.br/contato



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