Devuan bug report logs - #437
tomcat8: Tomcat8 fix for CVE-2020-1938 breaks compatibility with Apache2 mod_proxy_ajp

Package: tomcat8; Severity: grave; Reported by: Gianluca Bonetti <[email protected]>; Keywords: debian; Done: Mark Hindley <[email protected]>; Maintainer for tomcat8 is (unknown).

Message received at [email protected]:

Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=193.36.131.86; helo=mx.hindley.org.uk; [email protected]; receiver=<UNKNOWN> 
Date: Tue, 2 Jul 2024 08:09:35 +0100
From: Mark Hindley <[email protected]>
To: [email protected]
Subject: Closed in in Debian #959747
Message-ID: <[email protected]>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

Tomcat8 removed in Debian. Closing related bugs.

Mark

Notification sent to Gianluca Bonetti <[email protected]>:
bug acknowledged by developer. Full text available.

Reply sent to Mark Hindley <[email protected]>:
You have taken responsibility. Full text available.

Set bug forwarded-to-address to 'https://bugs.debian.org/959747'. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Message received at [email protected]:

Date: Tue, 5 May 2020 09:27:34 +0100
From: Mark Hindley <[email protected]>
To: [email protected], Gianluca Bonetti <[email protected]>
Subject: Re: tomcat8: Tomcat8 fix for CVE-2020-1938 breaks compatibility with
 Apache2 mod_proxy_ajp
Message-ID: <[email protected]>
References: <158862207573.24044.3823604338219569371.reportbug@sys3.prometeoinformatica.it>
 <[email protected]>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <[email protected]>
User-Agent: Mutt/1.10.1 (2018-07-13)

On Tue, May 05, 2020 at 09:22:30AM +0100, Mark Hindley wrote:
> Control: tags -1 debian

https://bugs.debian.org/959747

Information forwarded to [email protected], [email protected]:
bug#437; Package tomcat8. Full text available.

Added tag(s) debian. Request was from Mark Hindley <[email protected]> to [email protected]. Full text available.

Message received at [email protected]:

Received: (at 437) by bugs.devuan.org; 5 May 2020 08:30:03 +0000
Return-Path: <[email protected]>
Delivered-To: [email protected]
Received: from tupac3.dyne.org [195.169.149.119]
	by doc.devuan.org with IMAP (fetchmail-6.4.0.beta4)
	for <debbugs@localhost> (single-drop); Tue, 05 May 2020 08:30:03 +0000 (UTC)
Received: from mx.hindley.org.uk (mohindley.plus.com [81.174.245.179])
	(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
	(No client certificate requested)
	by vm6.ganeti.dyne.org (Postfix) with ESMTPS id 5CDA1F604B7
	for <[email protected]>; Tue,  5 May 2020 10:22:34 +0200 (CEST)
Received: from apollo.hindleynet ([192.168.1.3] helo=hindley.org.uk)
	by mx.hindley.org.uk with smtp (Exim 4.84_2)
	(envelope-from <[email protected]>)
	id 1jVsqV-0004We-4Y; Tue, 05 May 2020 09:22:31 +0100
Received: (nullmailer pid 18591 invoked by uid 1000);
	Tue, 05 May 2020 08:22:30 -0000
Date: Tue, 5 May 2020 09:22:30 +0100
From: Mark Hindley <[email protected]>
To: [email protected], Gianluca Bonetti <[email protected]>
Subject: Re: tomcat8: Tomcat8 fix for CVE-2020-1938 breaks compatibility with
 Apache2 mod_proxy_ajp
Message-ID: <[email protected]>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <158862207573.24044.3823604338219569371.reportbug@sys3.prometeoinformatica.it>
X-Debbugs-No-Ack: No Thanks
User-Agent: Mutt/1.10.1 (2018-07-13)
X-Spam-Status: No, score=0.0 required=5.0 tests=FAKE_REPLY_C,SPF_PASS
	autolearn=disabled version=3.4.2
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on tupac3.dyne.org

Control: tags -1 debian

On Mon, 04 May 2020 21:54:35 +0200 Gianluca Bonetti <[email protected]> wrote:
> Package: tomcat8
> Version: 8.5.54-0+deb9u1
> Severity: grave
> 
> Dear Maintainer,
> 
> Last tomcat8 upgrade, fixing CVE-2020-1938, is breaking the functionalities of Tomcat AJP connector
> in standard setup.

Gianluca,

Thanks for this. However neither tomcat8 nor apache2 are forked packages in
Devuan and we use Debian's packages directly.

Please report this issue directly to Debian's BTS.

Thanks

Mark

Information forwarded to [email protected], [email protected]:
bug#437; Package tomcat8. Full text available.

Message received at [email protected]:

Received: (at submit) by bugs.devuan.org; 4 May 2020 20:00:02 +0000
Return-Path: <[email protected]>
Delivered-To: [email protected]
Received: from tupac3.dyne.org [195.169.149.119]
	by doc.devuan.org with IMAP (fetchmail-6.4.0.beta4)
	for <debbugs@localhost> (single-drop); Mon, 04 May 2020 20:00:01 +0000 (UTC)
Received: from sys3.prometeoinformatica.it (sys3.prometeoinformatica.it [94.23.203.76])
	by vm6.ganeti.dyne.org (Postfix) with ESMTP id 91650F6050A
	for <[email protected]>; Mon,  4 May 2020 21:54:36 +0200 (CEST)
Received: by sys3.prometeoinformatica.it (Postfix, from userid 0)
	id B57911A86; Mon,  4 May 2020 21:54:35 +0200 (CEST)
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
From: Gianluca Bonetti <[email protected]>
To: Devuan Bug Tracking System <[email protected]>
Subject: tomcat8: Tomcat8 fix for CVE-2020-1938 breaks compatibility with Apache2 mod_proxy_ajp
Message-ID: <158862207573.24044.3823604338219569371.reportbug@sys3.prometeoinformatica.it>
X-Mailer: reportbug 7.1.6+devuan2.1
Date: Mon, 04 May 2020 21:54:35 +0200
X-Spam-Status: No, score=3.2 required=5.0 tests=DKIM_ADSP_CUSTOM_MED,
	FORGED_GMAIL_RCVD,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED,SPF_SOFTFAIL
	autolearn=disabled version=3.4.2
X-Spam-Level: ***
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on tupac3.dyne.org

Package: tomcat8
Version: 8.5.54-0+deb9u1
Severity: grave

Dear Maintainer,

Last tomcat8 upgrade, fixing CVE-2020-1938, is breaking the functionalities of Tomcat AJP connector
in standard setup.
The updated tomcat8 version implements 'secretRequired' parameter in <Connector> tag for config file
/etc/tomcat8/server.xml (attached by reportbut) and the implicit default for 'secretRequired' is true.
The default value is not explicitly marked in the standard server.xml, nor documented there.

However, current apache2 package version 2.4.25-3+deb9u9 does not support secret in mod_proxy_ajp.
Hence, to get a working system using AJP, secretRequired has to be set to false in server.xml

Apache2 mod_proxy_ajp supports secret since version 2.5, backported to 2.4.42.
https://httpd.apache.org/docs/trunk/mod/mod_proxy_ajp.html
https://httpd.apache.org/docs/2.4/mod/mod_proxy_ajp.html

The solution is either to upgrade the apache2 package, or to have the default for 'secretRequired' set
to 'false', with some comments in the server.xml itself.
The standard configuration accepts AJP connections from localhost only, and/or iptables rules can
applied as well.

Adding relevant part of catalina.out to this bug report.

Thank you
Cheers
Gianluca Bonetti

-- System Information:
Debian Release: 9
Architecture: amd64
 (x86_64)

Kernel: Linux 4.9.0-12-amd64 (SMP w/8 CPU cores)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages tomcat8 depends on:
ii  adduser                3.115
ii  debconf [debconf-2.0]  1.5.61
ii  lsb-base               4.1+devuan2
ii  tomcat8-common         8.5.54-0+deb9u1
ii  ucf                    3.0036

Versions of packages tomcat8 recommends:
ii  authbind       2.1.2
ii  libtcnative-1  1.2.21-1~deb9u1

Versions of packages tomcat8 suggests:
pn  tomcat8-admin     <none>
pn  tomcat8-docs      <none>
pn  tomcat8-examples  <none>
pn  tomcat8-user      <none>

-- Configuration Files:
/etc/tomcat8/server.xml changed:
<?xml version="1.0" encoding="UTF-8"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at
      http://www.apache.org/licenses/LICENSE-2.0
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!-- Note:  A "Server" is not itself a "Container", so you may not
     define subcomponents such as "Valves" at this level.
     Documentation at /docs/config/server.html
 -->
<Server port="8005" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
  <!-- Security listener. Documentation at /docs/config/listeners.html
  <Listener className="org.apache.catalina.security.SecurityListener" />
  -->
  <!--APR library loader. Documentation at /docs/apr.html -->
  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
  <!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>
  <!-- A "Service" is a collection of one or more "Connectors" that share
       a single "Container" Note:  A "Service" is not itself a "Container",
       so you may not define subcomponents such as "Valves" at this level.
       Documentation at /docs/config/service.html
   -->
  <Service name="Catalina">
    <!--The connectors can use a shared executor, you can define one or more named thread pools-->
    <!--
    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
        maxThreads="150" minSpareThreads="4"/>
    -->
    <!-- A "Connector" represents an endpoint by which requests are received
         and responses are returned. Documentation at :
         Java HTTP Connector: /docs/config/http.html
         Java AJP  Connector: /docs/config/ajp.html
         APR (HTTP/AJP) Connector: /docs/apr.html
         Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
    -->
    <!--
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    -->
    <!-- A "Connector" using the shared thread pool-->
    <!--
    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    -->
    <!-- Define an SSL/TLS HTTP/1.1 Connector on port 8443
         This connector uses the NIO implementation. The default
         SSLImplementation will depend on the presence of the APR/native
         library and the useOpenSSL attribute of the
         AprLifecycleListener.
         Either JSSE or OpenSSL style configuration may be used regardless of
         the SSLImplementation selected. JSSE style configuration is used below.
    -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
               maxThreads="150" SSLEnabled="true">
        <SSLHostConfig>
            <Certificate certificateKeystoreFile="conf/localhost-rsa.jks"
                         type="RSA" />
        </SSLHostConfig>
    </Connector>
    -->
    <!-- Define an SSL/TLS HTTP/1.1 Connector on port 8443 with HTTP/2
         This connector uses the APR/native implementation which always uses
         OpenSSL for TLS.
         Either JSSE or OpenSSL style configuration may be used. OpenSSL style
         configuration is used below.
    -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol"
               maxThreads="150" SSLEnabled="true" >
        <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
        <SSLHostConfig>
            <Certificate certificateKeyFile="conf/localhost-rsa-key.pem"
                         certificateFile="conf/localhost-rsa-cert.pem"
                         certificateChainFile="conf/localhost-rsa-chain.pem"
                         type="RSA" />
        </SSLHostConfig>
    </Connector>
    -->
    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector protocol="AJP/1.3"
               secretRequired="false"
               address="127.0.0.1"
               port="8009"
               redirectPort="8443" />
    <!-- An Engine represents the entry point (within Catalina) that processes
         every request.  The Engine implementation for Tomcat stand alone
         analyzes the HTTP headers included with the request, and passes them
         on to the appropriate Host (virtual host).
         Documentation at /docs/config/engine.html -->
    <!-- You should set jvmRoute to support load-balancing via AJP ie :
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
    -->
    <Engine name="Catalina" defaultHost="localhost">
      <!--For clustering, please take a look at documentation at:
          /docs/cluster-howto.html  (simple how to)
          /docs/config/cluster.html (reference documentation) -->
      <!--
      <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
      -->
      <!-- Use the LockOutRealm to prevent attempts to guess user passwords
           via a brute-force attack -->
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <!-- This Realm uses the UserDatabase configured in the global JNDI
             resources under the key "UserDatabase".  Any edits
             that are performed against this UserDatabase are immediately
             available for use by the Realm.  -->
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <!-- SingleSignOn valve, share authentication between web applications
             Documentation at: /docs/config/valve.html -->
        <!--
        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
        -->
        <!-- Access log processes all example.
             Documentation at: /docs/config/valve.html
             Note: The pattern used is equivalent to using pattern="common" -->
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />
      </Host>
    </Engine>
  </Service>
</Server>


-- debconf information:
  tomcat8/username: tomcat8
  tomcat8/javaopts: -Djava.awt.headless=true -Xms8g -Xmx8g -XX:+UseG1GC -Dserver=1 -Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n
  tomcat8/groupname: tomcat8

-- catalina.out:
04-May-2020 19:49:31.629 GRAVE [main] org.apache.catalina.core.StandardService.startInternal Failed to start connector [Connector[AJP/1.3-8009]]
        org.apache.catalina.LifecycleException: Protocol handler start failed
                at org.apache.catalina.connector.Connector.startInternal(Connector.java:1086)
                at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
                at org.apache.catalina.core.StandardService.startInternal(StandardService.java:440)
                at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
                at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:766)
                at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
                at org.apache.catalina.startup.Catalina.start(Catalina.java:688)
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
                at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
                at java.lang.reflect.Method.invoke(Method.java:498)
                at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
                at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
        Caused by: java.lang.IllegalArgumentException: The AJP Connector is configured with secretRequired="true" but the secret attribute is either null or "". This combination is not valid.
                at org.apache.coyote.ajp.AbstractAjpProtocol.start(AbstractAjpProtocol.java:274)
                at org.apache.catalina.connector.Connector.startInternal(Connector.java:1083)
                ... 12 more
04-May-2020 19:49:31.630 INFORMAZIONI [main] org.apache.catalina.startup.Catalina.start Server startup in 6947 ms

Acknowledgement sent to Gianluca Bonetti <[email protected]>:
New bug report received and forwarded. Copy sent to [email protected]. Full text available.

Report forwarded to [email protected], [email protected]:
bug#437; Package tomcat8. Full text available.

Devuan bug report logs - #437 tomcat8: Tomcat8 fix for CVE-2020-1938 breaks compatibility with Apache2 mod_proxy_ajp

Message received at [email protected]:

Message received at [email protected]:

Message received at [email protected]:

Message received at [email protected]:

Devuan bug report logs - #437
tomcat8: Tomcat8 fix for CVE-2020-1938 breaks compatibility with Apache2 mod_proxy_ajp