Detections
Analytics
RealVNC VNC Viewer < 4.1.3/4.4.3 Arbitrary Command Execution
high Nessus Plugin ID 34461
Synopsis
The remote Windows host has an application that may allow execution of arbitrary code.Description
The version of RealVNC's VNC Viewer installed on the remote Windows host is affected by multiple issues :- An error in the 'CMsgReader::readRect()' function in 'common/rfb/CMsgReader.cxx' that comes into play when processing encoding types, may allow arbitrary code execution on the remote system. If an attacker can trick a user on the remote host into connecting to a malicious server, he can exploit this issue using specially crafted messages to compromise that host.
- By tricking a user to connect to a malicious VNC server, it may be possible for an attacker to execute arbitrary code on a remote system by sending malicious RFB protocol data to the remote VNC Viewer component. Note VNC servers are not affected by this issue.
Solution
Upgrade to RealVNC VNC Viewer Free Edition 4.1.3 / Personal Edition 4.4.3 / Enterprise Edition 4.4.3 or later.See Also
https://www.realvnc.com/en/connect/benefits/
http://www.realvnc.com/products/personal/4.4/release-notes.html
http://www.realvnc.com/products/enterprise/4.4/release-notes.html
Plugin Details
Severity: High
ID: 34461
File Name: realvnc_4_1_3.nasl
Version: 1.15
Type: local
Agent: windows
Family: Windows
Published: 10/21/2008
Updated: 11/15/2018
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 6.9
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: cpe:/a:realvnc:realvnc
Required KB Items: SMB/Registry/Enumerated
Exploit Ease: No known exploits are available
Reference Information
CVE: CVE-2008-4770