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...

libvncserver: libvncserver/rfbserver.c has a divide by zero which could result in DoS

A divide by zero flaw was found in libvncserver. This flaw allows a malicious client to send a specially crafted message that, when processed by the VNC server, leads to a floating-point exception, resulting in a denial of service. The highest threat from this vulnerability is to system...

Moderate: libvncserver security update

LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Security Fixes: libvncserver: uninitialized memory contents are vulnerable to Information Leak CVE-2018-21247 libvncserver: buffer overflow in ConnectClientToUnixSock CVE-2019-20839 libvncserver:...

RLSA-2021:1783 Moderate: tigervnc security, bug fix, and enhancement update

Virtual Network Computing VNC is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients. The...

Authentication flaw

Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC...

CVE-2021-20590

CVE-2021-20590 affects Mitsubishi Electric GOT2000 series (GT27/GT25/GT21) VNC server and GOT SIMPLE GS21 series VNC server. Root cause: improper authentication (CWE-287) in the VNC function, enabling remote unauthenticated access via specially crafted packets. Public documentation confirms affec...

CVE-2021-20590

Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC...

Debian: Security Advisory (DLA-2490-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2020 Greenbone AG 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-only ifdescription...

Debian DLA-2490-1 : x11vnc security update

Guenal Davalan reported a flaw in x11vnc, a VNC server to allow remote access to an existing X session. x11vnc creates shared memory segments with 0777 mode. A local attacker can take advantage of this flaw for information disclosure, denial of service or interfering with the VNC session of anoth...

DEBIAN-CVE-2020-25708

A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service...

CVE-2020-25708

A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service...

UBUNTU-CVE-2020-25708

A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service...

CVE-2020-25708

A divide by zero issue was found to occur in libvncserver-0.9.12. A malicious client could use this flaw to send a specially crafted message that, when processed by the VNC server, would lead to a floating point exception, resulting in a denial of service...

QEMU: vnc: memory leakage upon disconnect

A memory leakage flaw was found in the way the VNC display driver of QEMU handled the connection disconnect when ZRLE and Tight encoding are enabled. Two VncState objects are created, and one allocates memory for the Zlib's data object. This allocated memory is not freed upon disconnection,...

Huawei EulerOS: Security Advisory for gtk-vnc (EulerOS-SA-2020-2010)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG 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-only ifdescription...

Updated novnc package fixes a security vulnerability

An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages propagated to the status field, such as the VNC server name. CVE-2017-18635...

MGASA-2020-0374 Updated novnc package fixes a security vulnerability

An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages propagated to the status field, such as the VNC server name. CVE-2017-18635...

USN-4522-1 novnc vulnerability

It was discovered that noVNC did not properly manage certain messages, resulting in the remote VNC server injecting arbitrary HTML into the noVNC web page. An attacker could use this issue to conduct cross-site scripting XSS attacks. CVE-2017-18635...

Ubuntu 16.04 LTS : noVNC vulnerability (USN-4522-1)

The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4522-1 advisory. It was discovered that noVNC did not properly manage certain messages, resulting in the remote VNC server injecting arbitrary HTML into the noVNC web page. An...

Huawei EulerOS: Security Advisory for libvncserver (EulerOS-SA-2020-1866)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2020 Greenbone AG 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-only ifdescription...