openSUSE Security Update : xorg-x11-Xvnc (openSUSE-SU-2010:0561-1)

high Nessus Plugin ID 75779
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote openSUSE host is missing a security update.

Description

The X.Org X11 Server was updated to fix several bugs and 2 security issues :

Two security issues were fixed: CVE-2010-2240: This fix adds a workaround for overlapping stacks and heaps in case of OOM conditions.This workaround is necessary if the kernel is not properly adding guard or gap-pages below the stack.

CVE-2010-1166: The fbComposite function in fbpict.c in the Render extension in the X server in X.Org X11R7.1 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) or possibly execute arbitrary code via a crafted request, related to an incorrect macro definition.

Non-Security Bugs fixed: Fix some shortcomings in the Xdmcp implementation. It used to suppress loopback addresses from the list of potential display addresses to report to xdm, even when talking to xdm through a loopback address. Now only display addresses of the same kind as the xdm connection are reported to xdm.

This most notably helps Xvnc servers contacting the local xdm, because they were severely affected by the suppression of loopback addresses.

Solution

Update the affected xorg-x11-Xvnc packages.

See Also

https://bugzilla.novell.com/show_bug.cgi?id=546632

https://bugzilla.novell.com/show_bug.cgi?id=597232

https://bugzilla.novell.com/show_bug.cgi?id=618152

https://bugzilla.novell.com/show_bug.cgi?id=623254

https://bugzilla.novell.com/show_bug.cgi?id=625593

https://lists.opensuse.org/opensuse-updates/2010-08/msg00064.html

Plugin Details

Severity: High

ID: 75779

File Name: suse_11_3_xorg-x11-Xvnc-100819.nasl

Version: 1.5

Type: local

Agent: unix

Published: 6/13/2014

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

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

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:xorg-x11-Xvnc, p-cpe:/a:novell:opensuse:xorg-x11-server, p-cpe:/a:novell:opensuse:xorg-x11-server-extra, p-cpe:/a:novell:opensuse:xorg-x11-server-sdk, cpe:/o:novell:opensuse:11.3

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

Patch Publication Date: 8/19/2010

Reference Information

CVE: CVE-2010-1166, CVE-2010-2240