Improper Initialization in UltraVNC - CVE-2019-8277
Published: November 27, 2019
Vulnerability identifier: #VU23010
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-8277
CWE-ID: CWE-665
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ultravnc.sourceforge.net
Affected software:
UltraVNC
UltraVNC
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to sensitive information on the target system.
The vulnerability exists due to an uninitialized read condition in VNC server code. A remote attacker can read stack memory and disclose sensitive information on the target system.
Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR.
How to mitigate CVE-2019-8277
Install updates from vendor's website.