RHEL 7 : gtk-vnc (RHSA-2017:2258)

High Nessus Plugin ID 102153


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


An update for gtk-vnc is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The gtk-vnc packages provide a VNC viewer widget for GTK. The gtk-vnc widget is built by using co-routines, which allows the widget to be completely asynchronous while remaining single-threaded.

The following packages have been upgraded to a later upstream version:
gtk-vnc (0.7.0). (BZ#1416783)

Security Fix(es) :

* It was found that gtk-vnc lacked proper bounds checking while processing messages using RRE, hextile, or copyrect encodings. A remote malicious VNC server could use this flaw to crash VNC viewers which are based on the gtk-vnc library. (CVE-2017-5884)

* An integer overflow flaw was found in gtk-vnc. A remote malicious VNC server could use this flaw to crash VNC viewers which are based on the gtk-vnc library. (CVE-2017-5885)

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.


Update the affected packages.

See Also





Plugin Details

Severity: High

ID: 102153

File Name: redhat-RHSA-2017-2258.nasl

Version: $Revision: 3.2 $

Type: local

Agent: unix

Published: 2017/08/03

Modified: 2017/08/07

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.8

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

Temporal Vector: CVSS2#E:POC/RL:U/RC:ND


Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:gtk-vnc, p-cpe:/a:redhat:enterprise_linux:gtk-vnc-debuginfo, p-cpe:/a:redhat:enterprise_linux:gtk-vnc-devel, p-cpe:/a:redhat:enterprise_linux:gtk-vnc-python, p-cpe:/a:redhat:enterprise_linux:gtk-vnc2, p-cpe:/a:redhat:enterprise_linux:gtk-vnc2-devel, p-cpe:/a:redhat:enterprise_linux:gvnc, p-cpe:/a:redhat:enterprise_linux:gvnc-devel, p-cpe:/a:redhat:enterprise_linux:gvnc-tools, p-cpe:/a:redhat:enterprise_linux:gvncpulse, p-cpe:/a:redhat:enterprise_linux:gvncpulse-devel, cpe:/o:redhat:enterprise_linux:7

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/08/01

Reference Information

CVE: CVE-2017-5884, CVE-2017-5885

OSVDB: 151479, 151480

RHSA: 2017:2258