Heap-based buffer overflow in TightVNC - CVE-2022-23967
Published: January 28, 2022 / Updated: January 30, 2022
Vulnerability identifier: #VU60162
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-23967
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the InitialiseRFBConnection function in rfbproto.c. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
TightVNC
How to mitigate CVE-2022-23967
Install update from vendor's website.
TightVNC - update to 2.0