In TigerVNC 1.7.1 (VNCSConnectionST.cxx VNCSConnectionST::fence), an authenticated client can cause a double free, leading to denial of service or potentially code execution.Referenceshttps://access.redhat.com/errata/RHSA-2017:2000http://www.securityfocus.com/bid/97305https://github.com/TigerVNC/tigervnc/pull/438https://security.gentoo.org/glsa/201801-13
