Debian 9: DLA-2435-1 Moderate: Guacamole-Server RDP Code Execution

debian lts

November 6, 2020

The server component of Apache Guacamole, a remote desktop gateway, did not properly validate data received from RDP servers

Topics Covered

security advisory code execution debian information disclosure remote desktop RDP guacamole-server

Summary

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: