The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Apache Tomcat: information disclosure via HTTP/2 Request Header Mix-up

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via HTTP/2 Request Header Mix-up of Apache Tomcat, in order to obtain sensitive information.
Vulnerable systems: Tomcat, Debian, MySQL Community, MySQL Enterprise, openSUSE Leap, Oracle Communications, Oracle DB, Solaris, Percona Server, SUSE Linux Enterprise Desktop, SLES.
Severity of this threat: 2/4.
Creation date: 03/12/2020.
Références of this weakness: CERTFR-2020-AVI-792, cpuapr2021, CVE-2020-17527, DLA-2495-1, DSA-4835-1, openSUSE-SU-2021:0043-1, openSUSE-SU-2021:0081-1, SUSE-SU-2021:0031-1, SUSE-SU-2021:0040-1, SUSE-SU-2021:0041-1, SUSE-SU-2021:0042-1, VIGILANCE-VUL-34034.

Description of the vulnerability 

An attacker can bypass access restrictions to data via HTTP/2 Request Header Mix-up of Apache Tomcat, in order to obtain sensitive information.
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This cybersecurity threat impacts software or systems such as Tomcat, Debian, 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 computer threat note 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 security threat.

Solutions for this threat 

Apache Tomcat: version 9.0.40.
The version 9.0.40 is fixed:
  https://tomcat.apache.org/whichversion.html

Apache Tomcat: version 8.5.60.
The version 8.5.60 is fixed:
  https://tomcat.apache.org/whichversion.html

Debian 10: new tomcat9 packages.
New packages are available:
  Debian 10: tomcat9 9.0.31-1~deb10u3

Debian 9: new tomcat8 packages.
New packages are available:
  Debian 9: tomcat8 8.5.54-0+deb9u5

openSUSE Leap 15.1: new tomcat packages.
New packages are available:
  openSUSE Leap 15.1: tomcat 9.0.36-lp151.3.39.1

openSUSE Leap 15.2: new tomcat packages.
New packages are available:
  openSUSE Leap 15.2: tomcat 9.0.36-lp152.2.16.1

Oracle Communications: CPU of April 2021.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2766613.1
  https://support.oracle.com/rs?type=doc&id=2765939.1
  https://support.oracle.com/rs?type=doc&id=2765941.1
  https://support.oracle.com/rs?type=doc&id=2652618.1
  https://support.oracle.com/rs?type=doc&id=2765926.1
  https://support.oracle.com/rs?type=doc&id=2766616.1
  https://support.oracle.com/rs?type=doc&id=2765925.1
  https://support.oracle.com/rs?type=doc&id=2769144.1
  https://support.oracle.com/rs?type=doc&id=2766633.1
  https://support.oracle.com/rs?type=doc&id=2766634.1
  https://support.oracle.com/rs?type=doc&id=2739349.1
  https://support.oracle.com/rs?type=doc&id=2765938.1
  https://support.oracle.com/rs?type=doc&id=2766637.1

Oracle Database: CPU of April 2021.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2749094.1

Oracle MySQL: version 5.7.34.
The version 5.7.34 is fixed:
  https://support.oracle.com/rs?type=doc&id=2764660.1
  https://www.mysql.com/fr/downloads/
  https://dev.mysql.com/downloads/mysql/

Oracle MySQL: version 8.0.24.
The version 8.0.24 is fixed:
  https://support.oracle.com/rs?type=doc&id=2764660.1
  https://www.mysql.com/fr/downloads/
  https://dev.mysql.com/downloads/mysql/

Oracle Solaris: patch for third party software of January 2021 v1.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

SUSE LE 12 SP4-5: new tomcat packages.
New packages are available:
  SUSE LE 12 SP4: tomcat 9.0.36-3.58.1
  SUSE LE 12 SP5: tomcat 9.0.36-3.58.1

SUSE LE 15 RTM -SP2: new tomcat packages.
New packages are available:
  SUSE LE 15 RTM: tomcat 9.0.36-3.74.1
  SUSE LE 15 SP1: tomcat 9.0.36-4.53.1
  SUSE LE 15 SP2: tomcat 9.0.36-3.18.1
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