Debian Security Advisory
DLA-2435-1 guacamole-server -- LTS security update
- Date Reported:
- 06 Nov 2020
- Affected Packages:
- 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.
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.
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