QID 376156

Date Published: 2021-12-14

QID 376156: TightVNC Buffer Overflow Vulnerability

In computing, TightVNC is a free and open-source remote desktop software server and client application for Linux and Windows

Buffer Overflow vulnerability in tvnviewer.exe of TightVNC Viewer allows a remote attacker to execute arbitrary instructions via a crafted FramebufferUpdate packet from a VNC server.

Affected Software:
TightVNC version upto 2.8.59.0
QID Detection Logic (Authenticated):
This checks for vulnerable version of TightVNC by checking the .exe version

Allows a remote attacker to execute arbitrary instructions via a crafted FramebufferUpdate packet from a VNC server

CVSS V3 rated as Critical - 9.8 severity.

CVSS V2 rated as High - 7.5 severity.

Solution

Upgrade to TightVNC Refer to TightVNC

Vendor References

TightVNC - www.tightvnc.com/whatsnew.php

CVEs related to QID 376156

CVE-2021-42785 |

Software Advisories

Advisory ID	Software	Component	Link
TightVNC			www.tightvnc.com/whatsnew.php

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