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Vulnerability of Apache Tomcat: information disclosure via Reverse Proxy Transfer-Encoding Header HTTP Request Smuggling

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Reverse Proxy Transfer-Encoding Header HTTP Request Smuggling of Apache Tomcat, in order to obtain sensitive information.
Vulnerable products: Tomcat, Debian, HP-UX, MariaDB ~ precise, MySQL Community, MySQL Enterprise, openSUSE Leap, Oracle Communications, Oracle DB, Solaris, Percona Server, SUSE Linux Enterprise Desktop, SLES.
Severity of this weakness: 2/4.
Creation date: 24/02/2020.
Références of this bulletin: bulletinapr2020, cpujul2020, CVE-2019-17569, DLA-2133-1, DSA-4673-1, DSA-4680-1, HPESBUX04015, openSUSE-SU-2020:0345-1, SUSE-SU-2020:0598-1, SUSE-SU-2020:0631-1, SUSE-SU-2020:0632-1, VIGILANCE-VUL-31662.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Reverse Proxy Transfer-Encoding Header HTTP Request Smuggling of Apache Tomcat, in order to obtain sensitive information.
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This security announce impacts software or systems such as Tomcat, Debian, HP-UX, MariaDB ~ precise, MySQL Community, MySQL Enterprise, openSUSE Leap, Oracle Communications, Oracle DB, Solaris, Percona Server, SUSE Linux Enterprise Desktop, SLES.

Our Vigil@nce team determined that the severity of this threat is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this computer vulnerability announce.

Solutions for this threat 

Apache Tomcat: version 9.0.31.
The version 9.0.31 is fixed:
  https://tomcat.apache.org/whichversion.html

Apache Tomcat: version 8.5.51.
The version 8.5.51 is fixed:
  https://tomcat.apache.org/whichversion.html

Apache Tomcat: version 7.0.100.
The version 7.0.100 is fixed:
  https://tomcat.apache.org/whichversion.html

Debian 10: new tomcat9 packages.
New packages are available:
  Debian 10: tomcat9 9.0.31-1~deb10u1

Debian 8: new tomcat7 packages.
New packages are available:
  Debian 8: tomcat7 7.0.56-3+really7.0.100-1

Debian 9: new tomcat8 packages.
New packages are available:
  Debian 9: tomcat8 8.5.54-0+deb9u1

HP-UX Tomcat: version 7.0.104.01.
The version 7.0.104.01 is fixed:
  https://myenterpriselicense.hpe.com/cwp-ui/free-software/HPUXWSATW509

MariaDB: versions 10.1.46, 10.2.33, 10.3.24, 10.4.14 and 10.5.5.
Versions 10.1.46, 10.2.33, 10.3.24, 10.4.14 and 10.5.5 are fixed:
  https://downloads.mariadb.org/mariadb/10.5.5
  https://downloads.mariadb.org/mariadb/10.4.14
  https://downloads.mariadb.org/mariadb/10.3.24
  https://downloads.mariadb.org/mariadb/10.2.33
  https://downloads.mariadb.org/mariadb/10.1.46

openSUSE Leap 15.1: new tomcat packages.
New packages are available:
  openSUSE Leap 15.1: tomcat 9.0.31-lp151.3.12.1

Oracle Communications: CPU of July 2020.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2681987.1
  https://support.oracle.com/rs?type=doc&id=2682459.1
  https://support.oracle.com/rs?type=doc&id=2682014.1
  https://support.oracle.com/rs?type=doc&id=2683787.1
  https://support.oracle.com/rs?type=doc&id=2683788.1
  https://support.oracle.com/rs?type=doc&id=2683789.1
  https://support.oracle.com/rs?type=doc&id=2682045.1
  https://support.oracle.com/rs?type=doc&id=2683831.1
  https://support.oracle.com/rs?type=doc&id=2682010.1
  https://support.oracle.com/rs?type=doc&id=2683832.1
  https://support.oracle.com/rs?type=doc&id=2682500.1
  https://support.oracle.com/rs?type=doc&id=2683241.1
  https://support.oracle.com/rs?type=doc&id=2682011.1
  https://support.oracle.com/rs?type=doc&id=2683840.1
  https://support.oracle.com/rs?type=doc&id=2682018.1
  https://support.oracle.com/rs?type=doc&id=2683841.1
  https://support.oracle.com/rs?type=doc&id=2683842.1
  https://support.oracle.com/rs?type=doc&id=2683843.1
  https://support.oracle.com/rs?type=doc&id=2683845.1

Oracle Database: CPU of July 2020.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2664876.1

Oracle MySQL: version 5.6.49.
The version 5.6.49 is fixed:
  https://support.oracle.com/rs?type=doc&id=2683189.1
  https://www.mysql.com/fr/downloads/
  https://dev.mysql.com/downloads/mysql/

Oracle MySQL: version 5.7.31.
The version 5.7.31 is fixed:
  https://support.oracle.com/rs?type=doc&id=2683189.1
  https://www.mysql.com/fr/downloads/
  https://dev.mysql.com/downloads/mysql/

Oracle MySQL: version 8.0.21.
The version 8.0.21 is fixed:
  https://support.oracle.com/rs?type=doc&id=2683189.1
  https://www.mysql.com/fr/downloads/
  https://dev.mysql.com/downloads/mysql/

Oracle Solaris: patch for third party software of April 2020 v1.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

Percona Server for MySQL: version 5.6.49-89.0.
The version 5.6.49-89.0 is fixed:
  https://www.percona.com/

SUSE LE 12: new tomcat packages.
New packages are available:
  SUSE LE 12 SP5: tomcat 9.0.31-3.25.1
  SUSE LE 12 SP4: tomcat 9.0.31-3.25.1

SUSE LE 15: new tomcat packages.
New packages are available:
  SUSE LE 15 RTM: tomcat 9.0.31-3.42.2
  SUSE LE 15 SP1: tomcat 9.0.31-4.22.1
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