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Vulnerability of Apache httpd: denial of service via HTTP/2 SETTINGS

Synthesis of the vulnerability 

An attacker can generate a fatal error via HTTP/2 SETTINGS of Apache httpd, in order to trigger a denial of service.
Impacted software: Apache httpd, IBM i, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this computer vulnerability: 3/4.
Creation date: 25/09/2018.
Références of this announce: bulletinjan2019, CERTFR-2018-AVI-490, CVE-2018-11763, ibm10735045, openSUSE-SU-2018:3185-1, openSUSE-SU-2018:3713-1, openSUSE-SU-2019:0084-1, openSUSE-SU-2019:1547-1, openSUSE-SU-2019:1814-1, RHSA-2018:3558-01, SUSE-SU-2018:3101-1, SUSE-SU-2018:3572-1, SUSE-SU-2018:3582-1, SUSE-SU-2018:3582-2, USN-3783-1, VIGILANCE-VUL-27316, ZDI-18-1369.

Description of the vulnerability 

An attacker can generate a fatal error via HTTP/2 SETTINGS of Apache httpd, in order to trigger a denial of service.
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This security bulletin impacts software or systems such as Apache httpd, IBM i, openSUSE Leap, Solaris, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity announce is important.

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 vulnerability alert.

Solutions for this threat 

Apache httpd: version 2.4.35.
The version 2.4.35 is fixed:
  http://httpd.apache.org/download.cgi

IBM i: patch for Apache HTTP/2 SETTINGS.
A patch is indicated in information sources.

openSUSE Leap 15.0: new apache2 packages.
New packages are available:
  openSUSE Leap 15.0: apache2 2.4.33-lp150.2.6.1

openSUSE Leap 15.0: new virtualbox packages.
New packages are available:
  openSUSE Leap 15.0: virtualbox 5.2.24-lp150.4.33.1

openSUSE Leap 42.3: new apache2 packages.
New packages are available:
  openSUSE Leap 42.3: apache2 2.4.23-31.1

openSUSE Leap 42.3: new virtualbox packages.
New packages are available:
  openSUSE Leap 42.3: virtualbox 5.2.24-66.1

openSUSE Leap: new virtualbox packages.
New packages are available:
  openSUSE Leap 15.0: virtualbox 6.0.10-lp150.4.36.1
  openSUSE Leap 15.1: virtualbox 6.0.10-lp151.2.6.1

Oracle Solaris: patch for third party software of January 2019 v1.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

RHEL: new httpd24 packages.
New packages are available:
  RHEL 6: httpd24-curl 7.61.1-1.el6, httpd24-httpd 2.4.34-7.el6, httpd24-nghttp2 1.7.1-7.el6
  RHEL 7: httpd24-curl 7.61.1-1.el7, httpd24-httpd 2.4.34-7.el7, httpd24-nghttp2 1.7.1-7.el7

SUSE LE 12: new apache2 packages.
New packages are available:
  SUSE LE 12 RTM: apache2-mod_nss 1.0.14-10.17.2
  SUSE LE 12 SP2: apache2 2.4.23-29.27.2
  SUSE LE 12 SP3: apache2 2.4.23-29.27.2

SUSE LE 12 SP4: new apache2 packages.
New packages are available:
  SUSE LE 12 SP4: apache2 2.4.23-29.27.2

SUSE LE 15: new apache2 packages.
New packages are available:
  SUSE LE 15 RTM: apache2 2.4.33-3.6.1

Ubuntu 18.04: new apache2-bin packages.
New packages are available:
  Ubuntu 18.04 LTS: apache2-bin 2.4.29-1ubuntu4.4

Wind River Linux: solution (28/11/2018).
The solution is indicated in information sources.
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