Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gtk-vnc | 0.6.0-3 | — |
| Debian 13 | gtk-vnc | 0.6.0-3 | — |
| Debian 12 | gtk-vnc | 0.6.0-3 | — |
| Debian 7 | gtk-vnc | 0.5.0-3.1+deb7u1 | DLA-831-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gtk-vnc | 0.5.3-1.3ubuntu2.1 | — |
| Ubuntu 14.04 LTS | gtk-vnc | 0.5.3-0ubuntu2.1 | USN-3203-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | gvnc +9 | 0.7.0-2.el7 | RHSA-2017:2258 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SLES 12 SP4 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SLES 12 SP3 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SLES 12 SP2 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SLES for SAP 12 SP4 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SLES for SAP 12 SP3 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SUSE OpenStack Cloud Crowbar 9 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SUSE OpenStack Cloud Crowbar 8 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SUSE OpenStack Cloud 9 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SUSE OpenStack Cloud 8 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
| SUSE HPE Helion OpenStack 8 | gtk-vnc +1 | 0.6.0-11.3.1 | SUSE-SU-2021:3125-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gtk-vnc | 1.2.0-1.4 | openSUSE-SU-2024:10833-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.23 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.22 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.21 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.20 | gtk-vnc | 0.7.0-r0 | — |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.18 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.17 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.16 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.15 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.14 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.13 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.12 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.11 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.10 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.9 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.8 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.7 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.6 | gtk-vnc | 0.7.0-r0 | — |
| Alpine v3.5 | gtk-vnc | 0.7.0-r0 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | gvnc +9 | 0.7.0-2.el7 | ELSA-2017-2258 |
Advisories 6
- RHSA-2017:2258 Red Hat Security Advisory: gtk-vnc security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3203-1 gtk-vnc vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-831-1 gtk-vnc - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10833-1 gtk-vnc-devel-1.2.0-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3125-1 Security update for gtk-vnc SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2017-2258 Moderate: gtk-vnc security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017
References
- https://git.gnome.org/browse/gtk-vnc/commit/?id=c8583fd3783c5b811590fcb7bae4ce6e7344963e
- [oss-security] 20170203 CVE request for two input validation flaws in gtk-vnc mailing-list
- 96016 vdb-entry
- RHSA-2017:2258 vendor-advisory
- FEDORA-2017-ab04a91edd vendor-advisory
- [oss-security] 20170204 Re: CVE request for two input validation flaws in gtk-vnc mailing-list
- https://bugzilla.gnome.org/show_bug.cgi?id=778050