Hi Jonathan,

while I agree that such changes should not happen within one Debian release and the maintainer might want to relax the rules for the package, the ServerName accepts a hostname as a parameter and a valid hostname cannot contain underscore. So the Apache is behaving correctly here not accepting invalid hostname.

Cheers, Ondřej


On 14 January 2017 11:42:11 Jonathan Vollebregt <jnv...@gmail.com> wrote:

Package: apache2
Version: 2.4.25-1
Severity: important

Dear Maintainer,

somewhere between 2.4.23-8 and 2.4.25-1 there was a regression that causes
apache to ignore ServerName directives containing underscores.

I have since tested and confirmed that removing the underscore fixes the
problem as does installing version 2.4.10-10+deb8u7

There is nothing in the error log indicating a problem (Not
surprising since it's not recognising the virtualhost at all)

The site conf file:

        $ cat /etc/apache2/sites-available/kint_test.conf
        <VirtualHost *:80>
                ServerName kint_test.local
                ServerAdmin webmaster@localhost
                DocumentRoot /home/j/localhost/kint_test
                ErrorLog ${APACHE_LOG_DIR}/error.log
                CustomLog ${APACHE_LOG_DIR}/access.log combined
        </VirtualHost>

The folder in question: (chmod -R 777, and other sites under
/home/j/localhost work fine so it's not a file permission issue)

        $ ls -l /home/j/localhost/kint_test
        total 8
        -rwxrwxrwx 1 j j 0 Jan 14 11:18 index.html

Relevant part of apache2.conf:

        <Directory /home/j/localhost>
                Options Indexes FollowSymLinks
                AllowOverride All
        
                Require ip 192.168
                Require local
        </Directory>

Relevant part of hosts file:

        $ grep kint_test /etc/hosts
        127.0.0.1       kint_test.local

Server response:

        $ curl kint_test.local
        <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
        <html><head>
        <title>400 Bad Request</title>
        </head><body>
        <h1>Bad Request</h1>
        <p>Your browser sent a request that this server could not understand.<br 
/>
        </p>
        <p>Additionally, a 400 Bad Request
error was encountered while trying to use an ErrorDocument to handle the request.</p>
        <hr>
        <address>Apache/2.4.25 (Debian) Server at 127.0.1.1 Port 80</address>
        </body></html>


-- Package-specific info:

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
APT policy: (900, 'unstable'), (800, 'testing'), (700, 'experimental'), (600, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages apache2 depends on:
ii  apache2-bin          2.4.25-1
ii  apache2-data         2.4.25-1
ii  apache2-utils        2.4.25-1
ii  dpkg                 1.18.18
ii  init-system-helpers  1.46
ii  lsb-base             9.20161125
ii  mime-support         3.60
ii  perl                 5.24.1~rc4-1
pn  perl:any             <none>
ii  procps               2:3.3.12-3

Versions of packages apache2 recommends:
ii  ssl-cert  1.0.38

Versions of packages apache2 suggests:
ii  apache2-doc                                      2.4.25-1
pn  apache2-suexec-pristine | apache2-suexec-custom  <none>
ii  chromium [www-browser]                           55.0.2883.75-2
ii  firefox-esr [www-browser]                        45.6.0esr-1
ii  lynx [www-browser]                               2.8.9dev11-1
ii  w3m [www-browser]                                0.5.3-34

Versions of packages apache2-bin depends on:
ii  libapr1                  1.5.2-5
ii  libaprutil1              1.5.4-3
ii  libaprutil1-dbd-sqlite3  1.5.4-3
ii  libaprutil1-ldap         1.5.4-3
ii  libc6                    2.24-8
ii  libldap-2.4-2            2.4.44+dfsg-3
ii  liblua5.2-0              5.2.4-1.1+b1
ii  libnghttp2-14            1.18.1-1
ii  libpcre3                 2:8.39-2
ii  libssl1.0.2              1.0.2j-5
ii  libxml2                  2.9.4+dfsg1-2.1
pn  perl:any                 <none>
ii  zlib1g                   1:1.2.8.dfsg-4

Versions of packages apache2-bin suggests:
ii  apache2-doc                                      2.4.25-1
pn  apache2-suexec-pristine | apache2-suexec-custom  <none>
ii  chromium [www-browser]                           55.0.2883.75-2
ii  firefox-esr [www-browser]                        45.6.0esr-1
ii  lynx [www-browser]                               2.8.9dev11-1
ii  w3m [www-browser]                                0.5.3-34

Versions of packages apache2 is related to:
ii  apache2      2.4.25-1
ii  apache2-bin  2.4.25-1

-- Configuration Files:
/etc/apache2/apache2.conf changed [not included]
/etc/apache2/sites-available/000-default.conf changed [not included]

-- no debconf information


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