An integer overflow flaw was found in the way TigerVNC handled ClientCutText messages. A remote, authenticated attacker could use this flaw to make Xvnc crash by sending specially crafted ClientCutText messages, resulting in denial of service.
In TigerVNC (SMsgReader.cxx SMsgReader::readClientCutText), an authenticated client can crash the server by causing an integer overflow.
Created tigervnc tracking bugs for this issue:
Affects: fedora-all [bug 1438704]
This issue has been addressed in the following products:
Red Hat Enterprise Linux 7
Via RHSA-2017:2000 https://access.redhat.com/errata/RHSA-2017:2000