A stack based buffer overflow flaw was found in guac client plug-in protocol handling functionality of libguac, a common library used by all C components of Guacamole. A remote attacker could provide a specially-crafted protocol specification to the guac client plug-in that, when processed would lead to guac client crash (denial of service).
This issue affects the versions of the libguac package, as shipped with Fedora release of 16 and 17. Please schedule an update.
This issue affects the version of the libguac package, as shipped with Fedora EPEL 6. Please schedule an update.
Created libguac tracking bugs for this issue
Affects: fedora-all [bug 856746]
Affects: epel-6 [bug 856747]
libguac-0.6.3-1.fc18, libguac-client-vnc-0.6.0-8.fc18, libguac-client-rdp-0.6.1-2.fc18, guacd-0.6.1-3.fc18, guacamole-common-0.6.1-2.fc18, guacamole-ext-0.6.1-2.fc18, guacamole-common-js-0.6.1-2.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
libguac-0.6.3-1.fc17, libguac-client-vnc-0.6.0-8.fc17, libguac-client-rdp-0.6.1-2.fc17, guacd-0.6.1-3.fc17, guacamole-common-0.6.1-2.fc17, guacamole-ext-0.6.1-2.fc17, guacamole-common-js-0.6.1-2.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
libguac-0.6.3-1.fc16, libguac-client-vnc-0.6.0-8.fc16, guacd-0.6.1-3.fc16, guacamole-common-0.6.1-2.fc16, guacamole-ext-0.6.1-2.fc16, guacamole-common-js-0.6.1-2.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.