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Vulnerability of Apache httpd mod_proxy_ftp: denial of service via FTP Backend

Synthesis of the vulnerability 

An attacker can trigger a fatal error via FTP Backend of Apache httpd mod_proxy_ftp, in order to trigger a denial of service.
Vulnerable systems: Apache httpd, Apache httpd Modules ~ not comprehensive, Debian, Fedora, IBM i, Rational ClearCase, openSUSE Leap, Oracle Communications, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 2/4.
Creation date: 01/04/2020.
Références of this weakness: 6194883, 6224298, CERTFR-2020-AVI-183, cpujul2020, CVE-2020-1934, DSA-4757-1, FEDORA-2020-0d3d3f5072, FEDORA-2020-189a1e6c3e, openSUSE-SU-2020:0597-1, RHSA-2020:3958-01, RHSA-2020:4751-01, SUSE-SU-2020:1111-1, SUSE-SU-2020:1126-1, SUSE-SU-2020:1272-1, SUSE-SU-2020:14342-1, USN-4458-1, VIGILANCE-VUL-31922.

Description of the vulnerability 

An attacker can trigger a fatal error via FTP Backend of Apache httpd mod_proxy_ftp, in order to trigger a denial of service.
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This cybersecurity threat impacts software or systems such as Apache httpd, Apache httpd Modules ~ not comprehensive, Debian, Fedora, IBM i, Rational ClearCase, openSUSE Leap, Oracle Communications, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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 intranet server.

An attacker with a expert ability can exploit this security threat.

Solutions for this threat 

Apache httpd: version 2.4.42.
The version 2.4.42 is fixed:
  https://httpd.apache.org/download.cgi

Debian 10: new apache2 packages.
New packages are available:
  Debian 10: apache2 2.4.38-3+deb10u4

Fedora 31: new httpd packages.
New packages are available:
  Fedora 31: httpd 2.4.46-1.fc31

Fedora 32: new httpd packages.
New packages are available:
  Fedora 32: httpd 2.4.46-1.fc32

IBM i: patch for Apache HTTP Server.
A patch is indicated in information sources.

IBM Rational ClearCase: patch for IBM HTTP Server.
A patch is indicated in information sources.

openSUSE Leap 15.1: new apache2 packages.
New packages are available:
  openSUSE Leap 15.1: apache2 2.4.33-lp151.8.12.1

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 Solaris: CPU of July 2020.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2684942.1

Oracle Solaris: patch for third party software of April 2020 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL 7.8: new httpd packages.
New packages are available:
  RHEL 7.0-7.8: httpd 2.4.6-95.el7

RHEL 8: new httpd-2.4 module.
The following module is updated:
  RHEL 8 Module: httpd:2.4

SUSE LE 11: new apache2 packages.
New packages are available:
  SUSE LE 11 SP4: apache2 2.2.34-70.27.1
  SUSE LE 11 SP3: apache2 2.2.34-70.27.1

SUSE LE 12: new apache2 packages.
New packages are available:
  SUSE LE 12 SP1: apache2 2.4.16-20.29.1
  SUSE LE 12 SP2: apache2 2.4.23-29.54.1
  SUSE LE 12 SP3: apache2 2.4.23-29.54.1
  SUSE LE 12 SP4: apache2 2.4.23-29.54.1
  SUSE LE 12 SP5: apache2 2.4.23-29.54.1

SUSE LE 15: new apache2 packages.
New packages are available:
  SUSE LE 15 RTM: apache2 2.4.33-3.30.1
  SUSE LE 15 SP1: apache2 2.4.33-3.30.1

Ubuntu: new apache2 packages.
New packages are available:
  Ubuntu 20.04 LTS: apache2 2.4.41-4ubuntu3.1
  Ubuntu 18.04 LTS: apache2 2.4.29-1ubuntu4.14
  Ubuntu 16.04 LTS: apache2 2.4.18-2ubuntu3.17

Wind River Linux: version 10.18.44.17.
The version 10.18.44.17 is fixed:
  https://support2.windriver.com/

Wind River Linux: version 10.19.45.8.
The version 10.19.45.8 is fixed.
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