Executive Summary

Summary
Title TigerVNC: Buffer overflow
Informations
Name GLSA-201702-19 First vendor Publication 2017-02-20
Vendor Gentoo Last vendor Modification 2017-02-20
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:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A buffer overflow in TigerVNC might allow remote attackers to execute arbitrary code.

Background

TigerVNC is a high-performance VNC server/client.

Description

A buffer overflow vulnerability in ModifiablePixelBuffer::fillRect in vncviewer was found.

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-1.7.1"

References

[ 1 ] CVE-2017-5581 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-5581

Availability

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

https://security.gentoo.org/glsa/201702-19

Original Source

Url : http://security.gentoo.org/glsa/glsa-201702-19.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 12

Nessus® Vulnerability Scanner

Date Description
2017-09-11 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1227.nasl - Type : ACT_GATHER_INFO
2017-09-11 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2017-1228.nasl - Type : ACT_GATHER_INFO
2017-09-01 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2017-879.nasl - Type : ACT_GATHER_INFO
2017-08-25 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-2000.nasl - Type : ACT_GATHER_INFO
2017-08-22 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170801_tigervnc_and_fltk_on_SL7_x.nasl - Type : ACT_GATHER_INFO
2017-08-09 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-2000.nasl - Type : ACT_GATHER_INFO
2017-08-02 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-2000.nasl - Type : ACT_GATHER_INFO
2017-04-06 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170321_tigervnc_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2017-03-30 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-0630.nasl - Type : ACT_GATHER_INFO
2017-03-27 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-0630.nasl - Type : ACT_GATHER_INFO
2017-03-22 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0630.nasl - Type : ACT_GATHER_INFO
2017-02-21 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201702-19.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
1
2
Date Informations
2017-07-01 09:25:35
  • Multiple Updates
2017-02-22 13:21:09
  • Multiple Updates
2017-02-21 05:18:58
  • First insertion