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Vulnerability of Apache httpd: privilege escalation via mod_session_cookie Ignored Expiry Time

Synthesis of the vulnerability 

An attacker can bypass restrictions via mod_session_cookie Ignored Expiry Time of Apache httpd, in order to escalate his privileges.
Impacted software: Apache httpd, Debian, HP-UX, IBM i, Rational ClearCase, openSUSE Leap, Solaris, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this computer vulnerability: 2/4.
Creation date: 23/01/2019.
Références of this announce: bulletinapr2019, CERTFR-2019-AVI-031, CVE-2018-17199, DLA-1647-1, DSA-4422-1, HPESBUX03950, ibm10869064, ibm10872490, ibm10876972, openSUSE-SU-2019:0296-1, openSUSE-SU-2019:0305-1, RHSA-2019:4126-01, RHSA-2020:1121-01, SSA:2019-022-01, SUSE-SU-2019:0498-1, SUSE-SU-2019:0504-1, USN-3937-1, VIGILANCE-VUL-28330.

Description of the vulnerability 

An attacker can bypass restrictions via mod_session_cookie Ignored Expiry Time of Apache httpd, in order to escalate his privileges.
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This computer threat alert impacts software or systems such as Apache httpd, Debian, HP-UX, IBM i, Rational ClearCase, openSUSE Leap, Solaris, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

The trust level is of type confirmed by the editor, with an origin of user account.

An attacker with a expert ability can exploit this computer weakness bulletin.

Solutions for this threat 

Apache httpd: version 2.4.38.
The version 2.4.38 is fixed:
  http://httpd.apache.org/download.cgi

Debian 8: new apache2 packages.
New packages are available:
  Debian 8: apache2 2.4.10-10+deb8u13

Debian 9: new apache2 packages.
New packages are available:
  Debian 9: apache2 2.4.25-3+deb9u7

HP-UX Apache-based Web Server: version B.2.4.18.05.
The version B.2.4.18.05 is fixed:
  https://h20392.www2.hpe.com/portal/swdepot/displayProductInfo.do?productNumber=HPUXWSSUITE
  https://h20392.www2.hpe.com/portal/swdepot/displayProductInfo.do?productNumber=HPUXWSATW508

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

IBM Rational ClearCase: patch for Apache httpd.
A patch is available:
  http://www-01.ibm.com/support/docview.wss?uid=ibm10875878

openSUSE Leap 15.0: new apache2 packages.
New packages are available:
  openSUSE Leap 15.0: apache2 2.4.33-lp150.2.9.1

openSUSE Leap 42.3: new apache2 packages.
New packages are available:
  openSUSE Leap 42.3: apache2 2.4.23-37.1

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

RHEL 6: new httpd24-httpd packages.
New packages are available:
  RHEL 6.0-6.10: httpd24-httpd 2.4.34-15.el6

RHEL 7: new httpd packages.
New packages are available:
  RHEL 7.0-7.7: httpd 2.4.6-93.el7

Slackware: new httpd packages.
New packages are available:
  Slackware 14.0: httpd 2.4.38-*-1_slack14.0
  Slackware 14.1: httpd 2.4.38-*-1_slack14.1
  Slackware 14.2: httpd 2.4.38-*-1_slack14.2

SUSE LE 12 SP3/4: new apache2 packages.
New packages are available:
  SUSE LE 12 SP3: apache2 2.4.23-29.34.4
  SUSE LE 12 SP4: apache2 2.4.23-29.34.4

SUSE LE 15: new apache2 packages.
New packages are available:
  SUSE LE 15 RTM: apache2 2.4.33-3.9.7

Ubuntu: new apache2-bin packages.
New packages are available:
  Ubuntu 18.10: apache2-bin 2.4.34-1ubuntu2.1
  Ubuntu 18.04 LTS: apache2-bin 2.4.29-1ubuntu4.6
  Ubuntu 16.04 LTS: apache2-bin 2.4.18-2ubuntu3.10
  Ubuntu 14.04 LTS: apache2-bin 2.4.7-1ubuntu4.22
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