Detections
Analytics

RHEL 3 / 4 / 5 : vnc (RHSA-2009:0261)

critical Nessus Plugin ID 35654

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

Updated vnc packages to correct a security issue are now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Virtual Network Computing (VNC) is a remote display system which allows you to view a computer's '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.

An insufficient input validation flaw was discovered in the VNC client application, vncviewer. If an attacker could convince a victim to connect to a malicious VNC server, or when an attacker was able to connect to vncviewer running in the 'listen' mode, the attacker could cause the victim's vncviewer to crash or, possibly, execute arbitrary code. (CVE-2008-4770)

Users of vncviewer should upgrade to these updated packages, which contain a backported patch to resolve this issue. For the update to take effect, all running instances of vncviewer must be restarted after the update is installed.

Solution

Update the affected vnc and / or vnc-server packages.

See Also

https://access.redhat.com/security/cve/cve-2008-4770

https://access.redhat.com/errata/RHSA-2009:0261

Plugin Details

Severity: Critical

ID: 35654

File Name: redhat-RHSA-2009-0261.nasl

Version: 1.25

Type: local

Agent: unix

Published: 2/12/2009

Updated: 1/14/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:vnc, cpe:/o:redhat:enterprise_linux:4.7, cpe:/o:redhat:enterprise_linux:3, p-cpe:/a:redhat:enterprise_linux:vnc-server, cpe:/o:redhat:enterprise_linux:4, cpe:/o:redhat:enterprise_linux:5.3

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 2/11/2009

Vulnerability Publication Date: 1/16/2009

Reference Information

CVE: CVE-2008-4770

BID: 33263

CWE: 20

RHSA: 2009:0261