{"id":"UBUNTU-CVE-2017-7393","details":"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of service or potentially code execution.","modified":"2025-07-16T07:37:08.890033Z","published":"2017-04-01T02:59:00Z","withdrawn":"2025-07-18T16:43:56Z","upstream":["CVE-2017-7393"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-7393"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-7393"}],"affected":[{"package":{"name":"tigervnc","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/tigervnc@1.7.0+dfsg-8ubuntu2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.0+dfsg-8ubuntu2"}]}],"versions":["1.7.0+dfsg-7ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-common"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-common-dbgsym"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-scraping-server"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-scraping-server-dbgsym"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-standalone-server"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-standalone-server-dbgsym"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-viewer"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-viewer-dbgsym"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-xorg-extension"},{"binary_version":"1.7.0+dfsg-8ubuntu2","binary_name":"tigervnc-xorg-extension-dbgsym"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-7393.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}