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

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Reverse Proxy Transfer-Encoding End-of-line HTTP Request Smuggling of Apache Tomcat, in order to obtain sensitive information.
Vulnerable software: Tomcat, Debian, HP-UX, MariaDB ~ precise, MySQL Community, MySQL Enterprise, openSUSE Leap, Oracle Communications, Oracle DB, Solaris, Percona Server, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this announce: 2/4.
Creation date: 24/02/2020.
Références of this computer vulnerability: bulletinapr2020, cpujul2020, CVE-2020-1935, DLA-2133-1, DLA-2209-1, 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, SUSE-SU-2020:2611-1, USN-4448-1, VIGILANCE-VUL-31663.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Reverse Proxy Transfer-Encoding End-of-line HTTP Request Smuggling of Apache Tomcat, in order to obtain sensitive information.
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This computer threat bulletin 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, Ubuntu.

Our Vigil@nce team determined that the severity of this security 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 alert.

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 8: new tomcat8 packages.
New packages are available:
  Debian 8: tomcat8 8.0.14-1+deb8u17

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 12 SP2-3: new tomcat packages.
New packages are available:
  SUSE LE 12 SP2: tomcat 8.0.53-29.37.1
  SUSE LE 12 SP3: tomcat 8.0.53-29.37.1

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

Ubuntu 16.04: new tomcat8 packages.
New packages are available:
  Ubuntu 16.04 LTS: tomcat8 8.0.32-1ubuntu1.13
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