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Vulnerability of OTRS Help Desk: information disclosure via External Notes

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via External Notes of OTRS Help Desk, in order to obtain sensitive information.
Impacted software: Debian, openSUSE Leap, OTRS Help Desk, SLES.
Severity of this computer vulnerability: 2/4.
Creation date: 03/06/2019.
Références of this announce: CVE-2019-12497, DLA-1816-1, openSUSE-SU-2020:0551-1, openSUSE-SU-2020:1475-1, openSUSE-SU-2020:1509-1, OSA-2019-09, VIGILANCE-VUL-29446.

Description of the vulnerability 

An attacker can bypass access restrictions to data via External Notes of OTRS Help Desk, in order to obtain sensitive information.
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This threat announce impacts software or systems such as Debian, openSUSE Leap, OTRS Help Desk, SLES.

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

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

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

Solutions for this threat 

OTRS Help Desk: version 7.0.8.
The version 7.0.8 is fixed:
  https://community.otrs.com/download-otrs-community-edition/

OTRS Help Desk: version 6.0.19.
The version 6.0.19 is fixed:
  https://community.otrs.com/download-otrs-community-edition/

OTRS Help Desk: version 5.0.36.
The version 5.0.36 is fixed:
  https://community.otrs.com/download-otrs-community-edition/

Debian 8: new otrs2 packages.
New packages are available:
  Debian 8: otrs2 3.3.18-1+deb8u10

openSUSE Leap 15.1: new otrs packages.
New packages are available:
  openSUSE Leap 15.1: otrs 5.0.42-lp151.2.3.1

openSUSE Leap 15, SUSE LE 15: new otrs packages.
New packages are available:
  openSUSE Leap 15.1: otrs 6.0.29-lp151.2.6.2
  openSUSE Leap 15.2: otrs 6.0.29-lp152.2.3.4
  SUSE LE 15 SP1: otrs 6.0.29-bp151.3.6.2
  SUSE LE 15 SP2: otrs 6.0.29-bp152.2.5.4

SUSE LE 15: new otrs packages.
New packages are available:
  SUSE LE 15 SP1: otrs 5.0.42-bp151.3.3.1
  SUSE LE 15 RTM: otrs 5.0.42-bp150.2.10.1

SUSE LE 15 SP2: new otrs packages.
New packages are available:
  SUSE LE 15 SP2: otrs 6.0.29-bp152.2.8.1
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