Input validation error in Guacamole - CVE-2020-9497
Published: July 2, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU29481
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2020-9497
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Apache Foundation
Affected software:
Guacamole
Guacamole
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to sensitive information on the system.
The vulnerability exists due to insufficient validation of user-supplied input of RDP static virtual channels. A remote attacker can use a specially crafted PDUs to disclose sensitive information within the memory of the guacd process handling the connection.
How to mitigate CVE-2020-9497
Install updates from vendor's website.