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

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

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.

See also :

http://www.nessus.org/u?70a6f8bb
http://rhn.redhat.com/errata/RHSA-2017-2258.html
https://www.redhat.com/security/data/cve/CVE-2017-5884.html
https://www.redhat.com/security/data/cve/CVE-2017-5885.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.8
(CVSS2#E:POC/RL:U/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 102153 ()

Bugtraq ID:

CVE ID: CVE-2017-5884
CVE-2017-5885

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