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Vulnerability of nginx: information disclosure via error_page Request Smuggling

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via error_page Request Smuggling of nginx, in order to obtain sensitive information.
Impacted systems: IBM API Connect, nginx, openSUSE Leap, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 10/01/2020.
Références of this alert: 6208032, 6208039, 6208048, 6208052, 6208328, 6208330, 6208332, 6208333, 6208336, CVE-2019-20372, openSUSE-SU-2020:0204-1, SUSE-SU-2020:0348-1, SUSE-SU-2020:1171-1, USN-4235-1, USN-4235-2, VIGILANCE-VUL-31301.

Description of the vulnerability 

An attacker can bypass access restrictions to data via error_page Request Smuggling of nginx, in order to obtain sensitive information.
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This vulnerability note impacts software or systems such as IBM API Connect, nginx, openSUSE Leap, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this computer threat note.

Solutions for this threat 

nginx: version 1.17.7.
The version 1.17.7 is fixed:
  http://nginx.org/

IBM API Connect: version 2018.4.1.11.
The version 2018.4.1.11 is fixed.

IBM API Connect: version 5.0.8.8.
The version 5.0.8.8 is fixed.

openSUSE Leap 15.1: new nginx packages.
New packages are available:
  openSUSE Leap 15.1: nginx 1.14.2-lp151.4.6.1

SUSE LE 15: new nginx packages.
New packages are available:
  SUSE LE 15 SP1: nginx 1.14.2-6.7.1
  SUSE LE 15 RTM: nginx 1.16.1-3.12.7

Ubuntu: new nginx packages.
New packages are available:
  Ubuntu 19.10: nginx 1.16.1-0ubuntu2.1
  Ubuntu 19.04: nginx 1.15.9-0ubuntu1.2
  Ubuntu 18.04 LTS: nginx 1.14.0-0ubuntu1.7
  Ubuntu 16.04 LTS: nginx 1.10.3-0ubuntu0.16.04.5
  Ubuntu 14.04 ESM: nginx 1.4.6-1ubuntu3.9+esm1

Wind River Linux: version 10.18.44.15.
The version 10.18.44.15 is fixed:
  https://support2.windriver.com/
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

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