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CVE-2017-5885

Multiple integer overflows in the (1) vnc_connection_server_message and (2) vnc_color_map_set...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

4.98%Up 1.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2017-5885
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-190
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2017-5885
Updated
2026-11-02
EUVDEUVD-2017-14960 No score

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.

Record
EUVD-2017-14960
Updated
2026-11-03
GitHub AdvisoriesGHSA-m2p7-mwp9-g3w6 9.8

Multiple integer overflows in the (1) vnc_connection_server_message and (2) vnc_color_map_set...

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.

Record
GHSA-m2p7-mwp9-g3w6
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-190
Updated
2026-11-02
OSV 9.8

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.

Record
CVE-2017-5885
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2017-5885 9.8

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.

Record
DEBIAN-CVE-2017-5885
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 6 moreShow less
OSVRHSA-2017:2258 3.1

Red Hat Security Advisory: gtk-vnc security, bug fix, and enhancement update

Record
RHSA-2017:2258
CVSS 3.0
3.1 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2017-5885 9.8

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.

Record
UBUNTU-CVE-2017-5885
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2017-0057 No score

Updated gtk-vnc packages fix security vulnerability

It was found that gtk-vnc code does not properly check boundaries of subrectangle-containing tiles. A malicious server can use this to overwrite parts of the client memory (CVE-2017-5884).

In addition, the vnc_connection_server_message() and vnc_color_map_set() functions do not check for integer overflow properly, leading to a malicious server being able to overwrite parts of the client memory (CVE-2017-5885).

Record
MGASA-2017-0057
Updated
2026-11-02
OSVopenSUSE-SU-2024:10833-1 No score

gtk-vnc-devel-1.2.0-1.4 on GA media

These are all security issues fixed in the gtk-vnc-devel-1.2.0-1.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10833-1
Updated
2026-11-02
OSVSUSE-SU-2021:3125-1 No score

Security update for gtk-vnc

This update for gtk-vnc fixes the following issues:

  • CVE-2017-5885: Correctly validate color map range indexes (bsc#1024268).
  • CVE-2017-5884: Fix bounds checking for RRE, hextile & copyrect encodings (bsc#1024266).
  • Fix crash when opening connection from a GSocketAddress (bsc#1046782).
  • Fix possible crash on connection failure (bsc#1188292).
Record
SUSE-SU-2021:3125-1
Updated
2026-11-02
OSVUSN-3203-1 No score

gtk-vnc vulnerabilities

It was discovered that gtk-vnc incorrectly validated certain data. A malicious server could use this issue to cause gtk-vnc to crash, resulting in a denial of service, or possibly execute arbitrary code.

Record
USN-3203-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gtk-vnc
Debian:12
 before 0.6.0-3
0.6.0-3
gtk-vnc
Debian:13
 before 0.6.0-3
0.6.0-3
gtk-vnc
Debian:14
 before 0.6.0-3
0.6.0-3
gtk-vnc
Debian:7
From an advisory covering 2 CVEs
 before 0.5.0-3.1+deb7u1, plus listed versions
0.5.0-3.1
0.5.0-3.1+deb7u1
gtk-vnc
Mageia:5
From an advisory covering 2 CVEs
 before 0.5.3-6.1.mga5
0.5.3-6.1.mga5
gtk-vnc
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-debuginfo
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-devel
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-python
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc2-devel
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
Show 61 moreShow less
Affected packages
PackageAffectedFixed
gvnc-devel
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc-tools
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvncpulse
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvncpulse-devel
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc2
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc
Red Hat:enterprise_linux:7::client
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-debuginfo
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-devel
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-python
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc2-devel
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc-devel
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc-tools
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvncpulse
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvncpulse-devel
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc2
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc
Red Hat:enterprise_linux:7::server
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-debuginfo
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-devel
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc-python
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc2-devel
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc-devel
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc-tools
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvncpulse
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvncpulse-devel
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc2
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gvnc
Red Hat:enterprise_linux:7::workstation
From an advisory covering 2 CVEs
 before 0:0.7.0-2.el7
0:0.7.0-2.el7
gtk-vnc
SUSE:HPE Helion OpenStack 8
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:HPE Helion OpenStack 8
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:OpenStack Cloud 8
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:OpenStack Cloud 8
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:OpenStack Cloud 9
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:OpenStack Cloud 9
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:OpenStack Cloud Crowbar 8
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:OpenStack Cloud Crowbar 9
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:OpenStack Cloud Crowbar 9
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Software Development Kit 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Software Development Kit 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server 12 SP2-BCL
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server 12 SP3-LTSS
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server 12 SP3-BCL
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server 12 SP4-LTSS
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server 12 SP4-LTSS
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc2
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
SUSE:Linux Enterprise Workstation Extension 12 SP5
From an advisory covering 2 CVEs
 before 0.6.0-11.3.1
0.6.0-11.3.1
gtk-vnc
Ubuntu:14.04:LTS
 before 0.5.3-0ubuntu2.1, plus listed versions
0.5.2-1ubuntu20.5.3-0ubuntu10.5.3-0ubuntu2
0.5.3-0ubuntu2.1
gtk-vnc
Ubuntu:16.04:LTS
 before 0.5.3-1.3ubuntu2.1, plus listed versions
0.5.3-1.30.5.3-1.3ubuntu10.5.3-1.3ubuntu2
0.5.3-1.3ubuntu2.1
gtk-vnc
Ubuntu:14.04:LTS
From an advisory covering 2 CVEs
 before 0.5.3-0ubuntu2.1, plus listed versions
0.5.2-1ubuntu20.5.3-0ubuntu10.5.3-0ubuntu2
0.5.3-0ubuntu2.1
gtk-vnc
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
 before 1.2.0-1.4
1.2.0-1.4

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-5885 is a critical vulnerability (CVSS 9.8) in Gnome Gtk-vnc, published February 7, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.98%, the 92nd percentile. Fixed in gtk-vnc 0.6.0-3.

References

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