CVE-2014-6053
Fixed in a distro release EPSS 7%
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.
Products: libvncserver, canonical ubuntu_linux, debian_linux
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | libvncserver | 0.9.9+dfsg-6.1 |
| Debian 12 | tightvnc | 1:1.3.9-9.1 |
| Debian 12 | vino | 3.22.0-6 |
| Debian 13 | libvncserver | 0.9.9+dfsg-6.1 |
| Debian 13 | tightvnc | 1:1.3.9-9.1 |
| Debian 14 | libvncserver | 0.9.9+dfsg-6.1 |
| Debian 14 | tightvnc | 1:1.3.9-9.1 |
| Debian 6.0 | libvncserver | 0.9.7-2+deb6u1 |
| Debian 7 | libvncserver | 0.9.9+dfsg-1+deb7u1 |
| Debian 8 | italc | 1:2.0.2+dfsg1-2+deb8u1 |
| Debian 8 | tightvnc | 1.3.9-6.5+deb8u1 |
| Debian 8 | vino | 3.14.0-2+deb8u1 |
| Red Hat Enterprise Linux 6 | libvncserver | 0:0.9.7-7.el6_6.1 |
| Red Hat Enterprise Linux 6 | libvncserver-debuginfo | 0:0.9.7-7.el6_6.1 |
| Red Hat Enterprise Linux 6 | libvncserver-devel | 0:0.9.7-7.el6_6.1 |
| Red Hat Enterprise Linux 7 | kdenetwork | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-common | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-debuginfo | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-devel | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-fileshare-samba | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-kdnssd | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-kget | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-kget-libs | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-kopete | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-kopete-devel | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-kopete-libs | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-krdc | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-krdc-devel | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-krdc-libs | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-krfb | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | kdenetwork-krfb-libs | 7:4.10.5-8.el7_0 |
| Red Hat Enterprise Linux 7 | libvncserver | 0:0.9.9-9.el7_0.1 |
| Red Hat Enterprise Linux 7 | libvncserver-debuginfo | 0:0.9.9-9.el7_0.1 |
| Red Hat Enterprise Linux 7 | libvncserver-devel | 0:0.9.9-9.el7_0.1 |
| SUSE Linux Enterprise Desktop 11 SP3 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Desktop 11 SP4 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Desktop 12 | LibVNCServer | 0.9.9-16.1 |
| SUSE Linux Enterprise Server 11 SP3 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Server 11 SP3-TERADATA | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Server 11 SP4 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Server 12 | LibVNCServer | 0.9.9-16.1 |
| SUSE Linux Enterprise Server 12 SP1 | LibVNCServer | 0.9.9-16.1 |
| SUSE Linux Enterprise Server for SAP Applications 11 SP3 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Server for SAP Applications 11 SP4 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 | LibVNCServer | 0.9.9-16.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | LibVNCServer | 0.9.9-16.1 |
| SUSE Linux Enterprise Software Development Kit 11 SP3 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Software Development Kit 11 SP4 | LibVNCServer | 0.9.1-156.1 |
| SUSE Linux Enterprise Software Development Kit 12 | LibVNCServer | 0.9.9-16.1 |
| SUSE Linux Enterprise Software Development Kit 12 SP1 | LibVNCServer | 0.9.9-16.1 |
| Ubuntu 14.04 LTS | krfb | 4:4.13.3-0ubuntu1.1 |
| Ubuntu 14.04 LTS | libvncserver | 0.9.9+dfsg-1ubuntu1.1 |
| Ubuntu 16.04 LTS | italc | 1:2.0.2+dfsg1-4ubuntu0.1 |
| Ubuntu 16.04 LTS | tightvnc | no fix |
| Ubuntu 16.04 LTS | vino | 3.8.1-0ubuntu9.3 |
| Ubuntu 18.04 LTS | tightvnc | no fix |
| Ubuntu 18.04 LTS | vino | 3.22.0-3ubuntu1.1 |
| Ubuntu 20.04 LTS | tightvnc | no fix |
| Ubuntu 20.04 LTS | vino | 3.22.0-5ubuntu2.1 |
| Ubuntu 22.04 LTS | tightvnc | no fix |
| Ubuntu 24.04 LTS | tightvnc | no fix |
| Ubuntu 25.10 | tightvnc | no fix |
| Ubuntu 26.04 LTS | tightvnc | no fix |
| Ubuntu 26.10 | tightvnc | no fix |
| Ubuntu Pro 14.04 LTS | tightvnc | 1.3.9-6.5+deb8u1build0.14.04.1~esm1 |