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Fencer Vulns
critical 9.8

CVE-2017-5885 json

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 remot…

published 2017-02-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14960

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

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.

Patch / fix

  • gtk-vnc Debian 14, Debian 13, Debian 12 0.6.0-3

debian advisories DEBIAN-CVE-2017-5885

  • gtk-vnc Ubuntu 14.04 LTS 0.5.3-0ubuntu2.1
  • gtk-vnc Ubuntu 16.04 LTS 0.5.3-1.3ubuntu2.1

ubuntu advisories UBUNTU-CVE-2017-5885

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gtk-vnc RHEL 7 0.7.0-2.el7
  • gvnc RHEL 7 0.7.0-2.el7
  • gtk-vnc2 RHEL 7 0.7.0-2.el7
  • gvncpulse RHEL 7 0.7.0-2.el7
  • gvnc-tools RHEL 7 0.7.0-2.el7
  • gtk-vnc-python RHEL 7 0.7.0-2.el7

red hat advisories RHSA-2017:2258

  • gtk-vnc SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +12 more 0.6.0-11.3.1
  • gtk-vnc2 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +11 more 0.6.0-11.3.1

suse advisories SUSE-SU-2021:3125-1

  • gtk-vnc openSUSE Tumbleweed 1.2.0-1.4

opensuse advisories openSUSE-SU-2024:10833-1

  • gtk-vnc Alpine 3.24, Alpine 3.23, Alpine 3.22 +17 more 0.7.0-r0

alpine advisories ALPINE-CVE-2017-5885

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-5885 updated cvss 3.1

gtk-vnc: Integer overflow when processing SetColorMapEntries

  • Red Hat Enterprise Linux 5 gtk-vnc Red Hat Enterprise Linux 6 gtk-vnc, gtk-vnc-python Red Hat Enterprise Virtualization 3 mingw-virt-viewer, mingw32-virt-viewer, mingw64-virt-viewer
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) gvnc 0.7.0-2.el7, gtk-vnc 0.7.0-2.el7, gtk-vnc2 0.7.0-2.el7 Red Hat Enterprise Linux Client Optional (v. 7) gtk-vnc 0.7.0-2.el7, gvncpulse 0.7.0-2.el7, gvnc-tools 0.7.0-2.el7, gtk-vnc-python 0.7.0-2.el7 Red Hat Enterprise Linux Server (v. 7) gvnc 0.7.0-2.el7, gtk-vnc 0.7.0-2.el7, gtk-vnc2 0.7.0-2.el7 Red Hat Enterprise Linux Server Optional (v. 7) gtk-vnc 0.7.0-2.el7, gvncpulse 0.7.0-2.el7, gvnc-tools 0.7.0-2.el7, gtk-vnc-python 0.7.0-2.el7 Red Hat Enterprise Linux Workstation (v. 7) gvnc 0.7.0-2.el7, gtk-vnc 0.7.0-2.el7, gtk-vnc2 0.7.0-2.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) gtk-vnc 0.7.0-2.el7, gvncpulse 0.7.0-2.el7, gvnc-tools 0.7.0-2.el7, gtk-vnc-python 0.7.0-2.el7
    fixed: vendor fix RHSA-2017:2258

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.98% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.gnome.org https://bugzilla.gnome.org/show_bug.cgi?id=778050 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.