Access of Uninitialized Pointer in Guacamole - CVE-2020-9498
Published: July 2, 2020 / Updated: July 15, 2020
Vulnerability identifier: #VU29482
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-9498
CWE-ID: CWE-824
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to the affected software mishandles pointers involved in processing data received via RDP static virtual channels. A remote attacker can use a specially crafted PDUs and execute arbitrary code on the target system.
Affected software
Guacamole
Fedora
Ivanti Connect Secure (formerly Pulse Connect Secure)
guacamole-server
Fedora
Ivanti Connect Secure (formerly Pulse Connect Secure)
guacamole-server
How to mitigate CVE-2020-9498
Install updates from vendor's website.
Guacamole - update to 1.2.0
guacamole-server - addressed in versions 1.2.0-2.el7, 1.2.0-3.fc32, 1.2.0-3.fc33
guacamole-server - addressed in versions 1.2.0-2.el7, 1.2.0-3.fc32, 1.2.0-3.fc33