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Vulnerability of Python Waitress: information disclosure via HTTP Request Smuggling

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via HTTP Request Smuggling of Python Waitress, in order to obtain sensitive information.
Impacted software: openSUSE Leap, Solaris, SLES.
Severity of this computer vulnerability: 2/4.
Number of vulnerabilities in this bulletin: 4.
Creation date: 10/11/2020.
Références of this announce: CVE-2019-16785, CVE-2019-16786, CVE-2019-16789, CVE-2019-16792, openSUSE-SU-2020:1911-1, openSUSE-SU-2020:1922-1, SUSE-SU-2020:3269-1, VIGILANCE-VUL-33880.

Description of the vulnerability 

An attacker can bypass access restrictions to data via HTTP Request Smuggling of Python Waitress, in order to obtain sensitive information.
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This vulnerability alert impacts software or systems such as openSUSE Leap, Solaris, SLES.

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

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

This bulletin is about 4 vulnerabilities.

An attacker with a expert ability can exploit this computer vulnerability.

Solutions for this threat 

openSUSE Leap 15.1-2: new python-waitress packages.
New packages are available:
  openSUSE Leap 15.1: python2-waitress 1.4.3-lp151.3.3.1, python3-waitress 1.4.3-lp151.3.3.1
  openSUSE Leap 15.2: python2-waitress 1.4.3-lp152.4.3.1, python3-waitress 1.4.3-lp152.4.3.1

Oracle Solaris: patch for third party software of April 2020 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

SUSE LE 15 RTM-SP2: new python-waitress packages.
New packages are available:
  SUSE LE 15 RTM: python3-waitress 1.4.3-3.3.1
  SUSE LE 15 SP1: python3-waitress 1.4.3-3.3.1
  SUSE LE 15 SP2: python3-waitress 1.4.3-3.3.1
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