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Vulnerability of Apache Guacamole: information disclosure via RDP Server

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via RDP Server of Apache Guacamole, in order to obtain sensitive information.
Impacted products: Debian, Pulse Connect Secure.
Severity of this bulletin: 2/4.
Creation date: 07/07/2020.
Références of this threat: CVE-2020-9497, DLA-2435-1, SA44525, VIGILANCE-VUL-32745.

Description of the vulnerability 

An attacker can bypass access restrictions to data via RDP Server of Apache Guacamole, in order to obtain sensitive information.
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This threat note impacts software or systems such as Debian, Pulse Connect Secure.

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

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

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

Solutions for this threat 

Debian 9: new guacamole-server packages.
New packages are available:
  Debian 9: guacamole-server 0.9.9-2+deb9u1

Pulse Connect Secure: workaround for Apache Guacamole.
A workaround is indicated in the information source.
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