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Vulnerability of OTRS Help Desk: privilege escalation via Session ID Link Sharing

Synthesis of the vulnerability

An attacker can bypass restrictions via Session ID Link Sharing of OTRS Help Desk, in order to escalate his privileges.
Severity of this computer vulnerability: 2/4.
Creation date: 12/07/2019.
Références of this announce: CVE-2019-12746, DLA-1877-1, OSA-2019-10, VIGILANCE-VUL-29758.

Description of the vulnerability

An attacker can bypass restrictions via Session ID Link Sharing of OTRS Help Desk, in order to escalate his privileges.
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This computer weakness impacts software or systems such as Debian, OTRS Help Desk.

Our Vigil@nce team determined that the severity of this vulnerability note 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 cybersecurity threat.

Solutions for this threat

OTRS Help Desk: version 6.0.20.
The version 6.0.20 is fixed:
  https://community.otrs.com/download-otrs-community-edition/

OTRS Help Desk: version 5.0.37.
The version 5.0.37 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+deb8u11
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