Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title TigerVNC: Integer overflow
Informations
Name GLSA-201612-36 First vendor Publication 2016-12-13
Vendor Gentoo Last vendor Modification 2016-12-13
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

An integer overflow in TigerVNC might allow remote attackers to execute arbitrary code.

Background

TigerVNC is a high-performance VNC server/client.

Description

TigerVNC is impacted by the same vulnerability as found in CVE-2014-6051. An integer overflow, leading to a heap-based buffer overflow, was found in the way screen sizes were handled.

Impact

A remote attacker, utilizing a malicious VNC server, could execute arbitrary code with the privileges of the user running the client, or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All TigerVNC users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/tigervnc-1.4.2"

References

[ 1 ] CVE-2014-6051
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6051
[ 2 ] CVE-2014-8240
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-8240

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201612-36

Original Source

Url : http://security.gentoo.org/glsa/glsa-201612-36.xml

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-189 Numeric Errors (CWE/SANS Top 25)
50 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:28676
 
Oval ID: oval:org.mitre.oval:def:28676
Title: SUSE-SU-2014:1592-1 -- Security update for tigervnc (moderate)
Description: This update for tigervnc provides the following fixes: - Fixed integer overflow flaw, leading to a heap-based buffer overflow in screen size handling. (CVE-2014-8240) - Send correctly keys that don't type any characters, such as CTRL+Space. (bnc#906922)
Family: unix Class: patch
Reference(s): SUSE-SU-2014:1592-1
CVE-2014-8240
 Version: 3
Platform(s): SUSE Linux Enterprise Desktop 12
 Product(s): tigervnc
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 5
Os 1
Os 2
Os 1
Os 1
Os 1

Nessus® Vulnerability Scanner

Date Description
2016-12-13 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201612-36.nasl - Type : ACT_GATHER_INFO
2016-10-12 Name : The remote FreeBSD host is missing a security-related update.
File : freebsd_pkg_cb3f036d8c7f11e6924a60a44ce6887b.nasl - Type : ACT_GATHER_INFO
2016-01-04 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-2088-2.nasl - Type : ACT_GATHER_INFO
2015-12-22 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20151119_tigervnc_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2015-12-16 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2015-851.nasl - Type : ACT_GATHER_INFO
2015-12-15 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2015-623.nasl - Type : ACT_GATHER_INFO
2015-12-02 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2015-2233.nasl - Type : ACT_GATHER_INFO
2015-11-30 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-2110-1.nasl - Type : ACT_GATHER_INFO
2015-11-30 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2015-2233.nasl - Type : ACT_GATHER_INFO
2015-11-25 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2015-2088-1.nasl - Type : ACT_GATHER_INFO
2015-11-20 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-2233.nasl - Type : ACT_GATHER_INFO
2015-07-08 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201507-07.nasl - Type : ACT_GATHER_INFO
2015-05-20 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2014-1592-1.nasl - Type : ACT_GATHER_INFO
2015-04-15 Name : The remote Debian host is missing a security update.
File : debian_DLA-197.nasl - Type : ACT_GATHER_INFO
2015-03-30 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2015-146.nasl - Type : ACT_GATHER_INFO
2015-02-03 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2015-0113.nasl - Type : ACT_GATHER_INFO
2014-12-01 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-3081.nasl - Type : ACT_GATHER_INFO
2014-11-27 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2014-229.nasl - Type : ACT_GATHER_INFO
2014-11-13 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20141111_libvncserver_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2014-11-12 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2014-1826.nasl - Type : ACT_GATHER_INFO
2014-11-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2014-1826.nasl - Type : ACT_GATHER_INFO
2014-11-12 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2014-1826.nasl - Type : ACT_GATHER_INFO
2014-10-09 Name : The remote Fedora host is missing a security update.
File : fedora_2014-11464.nasl - Type : ACT_GATHER_INFO
2014-10-06 Name : The remote Fedora host is missing a security update.
File : fedora_2014-11541.nasl - Type : ACT_GATHER_INFO
2014-10-01 Name : The remote Fedora host is missing a security update.
File : fedora_2014-11685.nasl - Type : ACT_GATHER_INFO
2014-09-30 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2365-1.nasl - Type : ACT_GATHER_INFO
2014-09-29 Name : The remote Fedora host is missing a security update.
File : fedora_2014-11537.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2016-12-14 13:26:32
  • Multiple Updates
2016-12-13 09:23:59
  • First insertion