Debian Long Term Support / LTS Security Information / 2020 / Security Information -- DLA-2435-1 guacamole-server

Debian Security Advisory

DLA-2435-1 guacamole-server -- LTS security update

Date Reported:

06 Nov 2020

Affected Packages:

guacamole-server

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 964195.
In Mitre's CVE dictionary: CVE-2020-9497, CVE-2020-9498.

More information:

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

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS