Integer overflow in gtk-vnc - CVE-2017-5885

Vulnerability identifier: #VU32990

CSH Severity: High

CVSS v4: 8.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-5885

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

Multiple integer overflows in the (1) vnc_connection_server_message and (2) vnc_color_map_set functions in gtk-vnc before 0.7.0 allow remote servers to cause a denial of service (crash) or possibly execute arbitrary code via vectors involving SetColorMapEntries, which triggers a buffer overflow.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

gtk-vnc
gtk-vnc (Alpine package)
python-gtk-vnc
typelib-1_0-GVncPulse-1_0
libgvncpulse-1_0-0-debuginfo
libgvncpulse-1_0-0
gtk-vnc2-devel
gtk-vnc-devel
gtk-vnc-lang
typelib-1_0-GtkVnc-2_0
typelib-1_0-GVnc-1_0
python-gtk-vnc-debuginfo
libgvnc-1_0-0-debuginfo
libgvnc-1_0-0
libgtk-vnc-2_0-0-debuginfo
libgtk-vnc-2_0-0
libgtk-vnc-1_0-0-debuginfo
libgtk-vnc-1_0-0
gtk-vnc2-debugsource
gtk-vnc-debugsource
typelib-1_0-GtkVnc-1_0
mingw-gtk-vnc
gtk-vnc
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SUSE OpenStack Cloud
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SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise Workstation Extension
Fedora

Install updates from vendor's website.

gtk-vnc - update to 0.7.0
gtk-vnc (Alpine package) - update to 0.7.0-r0
python-gtk-vnc - update to 0.6.0-11.3.1
typelib-1_0-GVncPulse-1_0 - update to 0.6.0-11.3.1
libgvncpulse-1_0-0-debuginfo - update to 0.6.0-11.3.1
libgvncpulse-1_0-0 - update to 0.6.0-11.3.1
gtk-vnc2-devel - update to 0.6.0-11.3.1
gtk-vnc-devel - update to 0.6.0-11.3.1
gtk-vnc-lang - update to 0.6.0-11.3.1
typelib-1_0-GtkVnc-2_0 - update to 0.6.0-11.3.1
typelib-1_0-GVnc-1_0 - update to 0.6.0-11.3.1
python-gtk-vnc-debuginfo - update to 0.6.0-11.3.1
libgvnc-1_0-0-debuginfo - update to 0.6.0-11.3.1
libgvnc-1_0-0 - update to 0.6.0-11.3.1
libgtk-vnc-2_0-0-debuginfo - update to 0.6.0-11.3.1
libgtk-vnc-2_0-0 - update to 0.6.0-11.3.1
libgtk-vnc-1_0-0-debuginfo - update to 0.6.0-11.3.1
libgtk-vnc-1_0-0 - update to 0.6.0-11.3.1
gtk-vnc2-debugsource - update to 0.6.0-11.3.1
gtk-vnc-debugsource - update to 0.6.0-11.3.1
typelib-1_0-GtkVnc-1_0 - update to 0.6.0-11.3.1
mingw-gtk-vnc - addressed in versions 0.7.0-1.fc24, 0.7.0-1.fc25
gtk-vnc - addressed in versions 0.7.0-1.fc24, 0.7.0-1.fc25

• http://www.openwall.com/lists/oss-security/2017/02/03/5
• http://www.openwall.com/lists/oss-security/2017/02/05/5
• http://www.securityfocus.com/bid/96016
• https://access.redhat.com/errata/RHSA-2017:2258
• https://bugzilla.gnome.org/show_bug.cgi?id=778050
• https://git.gnome.org/browse/gtk-vnc/commit/?id=c8583fd3783c5b811590fcb7bae4ce6e7344963e
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LGPQ5MQR6SN4DYTEFACHP2PP5RR26KYK/

• Remote code execution in gtk-vnc
• Integer overflow in gtk-vnc (Alpine package)
• SUSE update for gtk-vnc
• Fedora 24 update for mingw-gtk-vnc
• Fedora 25 update for mingw-gtk-vnc
• Fedora 25 update for gtk-vnc
• Fedora 24 update for gtk-vnc