Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static     virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted     PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges     of therunning guacd process. (CVE-2020-9498)

Note that Nessus relies on the presence of the package as reported by the vendor.

Updated SPEC file and rebuilt for new dependencies.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The server component of Apache Guacamole, a remote desktop gateway, did not properly validate data received from RDP servers. This could result in information disclosure or even the execution of arbitrary code.

CVE-2020-9497

Apache Guacamole does not properly validate data received from RDP servers via static virtual channels. If a user connects to a malicious or compromised RDP server, specially crafted PDUs could result in disclosure of information within the memory of the guacd process handling the connection.

CVE-2020-9498

Apache Guacamole may mishandle pointers involved in processing data received via RDP static virtual channels. If a user connects to a malicious or compromised RDP server, a series of specially crafted PDUs could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process.

For Debian 9 stretch, these problems have been fixed in version 0.9.9-2+deb9u1.

We recommend that you upgrade your guacamole-server packages.

For the detailed security status of guacamole-server please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/guacamole-server

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
259588	Linux Distros Unpatched Vulnerability : CVE-2020-9498	Nessus	Misc.	medium
144701	Fedora 33 : guacamole-server (2020-640645e518)	Nessus	Fedora Local Security Checks	medium
144652	Fedora 32 : guacamole-server (2020-bfde0ab889)	Nessus	Fedora Local Security Checks	medium
142632	Debian DLA-2435-1 : guacamole-server security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2020-9498

medium

Tenable Plugins

medium

medium

medium

medium