CVE-2021-41380

RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service application crash via crafted RFB protocol data. NOTE: It is asserted that this issue requires social engineering a user into connecting to a fake VNC Server. The VNC Viewer application they are using will then hang,...

CVE-2021-41380

RealVNC Viewer 6.21.406 is affected: remote VNC servers can trigger a denial of service (application crash) by sending crafted RFB data. The issue is tied to user interaction (social engineering) to connect to a fake server; the VNC Viewer hangs until termination, with no memory leak and resource...

CVE-2021-41380: Improper Input Validation

RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service application crash via crafted RFB protocol data. NOTE: It is asserted that this issue requires social engineering a user into connecting to a fake VNC Server. The VNC Viewer application they are using will then hang,...

Fedora: Security Advisory for x11vnc (FEDORA-2021-069c0c3950)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

[SECURITY] Fedora 34 Update: x11vnc-0.9.16-6.fc34

What WinVNC is to Windows x11vnc is to X Window System, i.e. a server which serves the current X Window System desktop via RFB VNC protocol to the us er. Based on the ideas of x0rfbserver and on LibVNCServer it has evolved into a versatile and productive while still easy to use program...

[SECURITY] Fedora 32 Update: x11vnc-0.9.16-3.fc32

What WinVNC is to Windows x11vnc is to X Window System, i.e. a server which serves the current X Window System desktop via RFB VNC protocol to the us er. Based on the ideas of x0rfbserver and on LibVNCServer it has evolved into a versatile and productive while still easy to use program...

Fedora: Security Advisory for x11vnc (FEDORA-2021-93911302d6)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

NICER Protocol Deep Dive: Internet Exposure of VNC

Welcome to the NICER Protocol Deep Dive blog series! When we started researching what all was out on the internet way back in January, we had no idea we'd end up with a hefty, 137-page tome of a research report. The sheer length of such a thing might put off folks who might otherwise learn a thin...

DEBIAN-CVE-2020-14399

An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed...

Fedora 28 : libvncserver (2018-390001d1c7)

This release fixes a possible sensitive data leak and a memory exhaustion when handling ClientTextCut messages of the RFB protocol. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatical...

Fedora 26 : libvncserver (2018-43541091ab)

This release fixes a possible sensitive data leak and a memory exhaustion when handling ClientTextCut messages of the RFB protocol. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatical...

Fedora 27 : libvncserver (2018-4897772a43)

This release fixes a possible sensitive data leak and a memory exhaustion when handling ClientTextCut messages of the RFB protocol. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatical...

VMware VNC Pointer Decode Code Execution Vulnerability(CVE-2017-4941)

Summary An exploitable code execution vulnerability exists in the remote management functionality of VMware . A specially crafted set of VNC packets can cause a type confusion resulting in stack overwrite, which could lead to code execution. An attacker can initiate a VNC session to trigger this...

VMware VNC Pointer Decode Code Execution Vulnerability

Summary An exploitable code execution vulnerability exists in the remote management functionality of VMware . A specially crafted set of VNC packets can cause a type confusion resulting in stack overwrite, which could lead to code execution. An attacker can initiate a VNC session to trigger this...

The remote control tool VNC denial of service vulnerability analysis-vulnerability warning-the black bar safety net

Original author: 3 6 0 security guard company account） LR, noirfate Foreword Qemu is a processor simulation software, can provide user-mode simulation and system mode simulation. When in the user mode of the simulation state will be used when dynamic translation technology allows a cpu to build t...

libvncserver: remote code execution, denial of service

CVE-2014-6051 Integer overflow in MallocFrameBuffer on client side. A malicious VNC server could advertise a very large screen size by RFB protocol, width and height are 16-bit integers, resulting in an integer overflow during malloc on client-side. Heap corruption, and possibly remote code...

VNC Server Unencrypted Communication Detection

This script checks the remote VNC server protocol version and the available 'security types' to determine if any unencrypted 'security-types' are in use or available. C Tenable Network Security, Inc. include"compat.inc"; if description scriptid65792; scriptversion"$Revision: 1.3 $";...

VNC Authentication Scanner

This module will test a VNC server on a range of machines and report successful logins. Currently it supports RFB protocol version 3.3, 3.7, 3.8 and 4.001 using the VNC challenge response authentication method. This module requires Metasploit: https://metasploit.com/download Current source:...

VNC Password Authentication bypass vulnerability attack case study-vulnerability warning-the black bar safety net

By this case can learn to: 1for the VNC Password Authentication bypass vulnerability 2The use of VNC Password Authentication bypass exploit tool software overflow vulnerability exists in the computer Bit networkthe expert feature articles on:RealVNCreferred to as VNCsoftware has free edition,...

UltraVNC VNCViewer Authenticate Buffer Overflow (CVE-2009-0388)

Virtual Network Computing VNC is a graphical desktop sharing technology that uses the Remote Frame Buffer RFB protocol to remotely control another computer. The controller computer client or viewer sends keyboard and mouse events to the controlled computer server; the controlled computer sends...