{"id":"UBUNTU-CVE-2017-3158","details":"A race condition in Guacamole's terminal emulator in versions 0.9.5 through 0.9.10-incubating could allow writes of blocks of printed data to overlap. Such overlapping writes could cause packet data to be misread as the packet length, resulting in the remaining data being written beyond the end of a statically-allocated buffer.","modified":"2026-04-22T11:24:01.087981Z","published":"2018-01-18T20:29:00Z","upstream":["CVE-2017-3158"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-3158"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/b218d36bfdaf655d27382daec4dcd02ec717631f4aee8b7e4300ad65@%3Cuser.guacamole.apache.org%3E"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-3158"}],"affected":[{"package":{"name":"guacamole-client","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/guacamole-client@0.8.3-1.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.3-1.1","0.8.3-1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.8.3-1.2","binary_name":"guacamole"},{"binary_version":"0.8.3-1.2","binary_name":"guacamole-tomcat"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3158.json"}},{"package":{"name":"guacamole-server","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/guacamole-server@0.8.3-2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.3-1build2","0.8.3-2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.8.3-2","binary_name":"guacd"},{"binary_version":"0.8.3-2","binary_name":"libguac-client-rdp0"},{"binary_version":"0.8.3-2","binary_name":"libguac-client-ssh0"},{"binary_version":"0.8.3-2","binary_name":"libguac-client-vnc0"},{"binary_version":"0.8.3-2","binary_name":"libguac5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3158.json"}},{"package":{"name":"guacamole-client","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/guacamole-client@0.9.9+dfsg-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.9+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.9.9+dfsg-1","binary_name":"guacamole"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3158.json"}},{"package":{"name":"guacamole-server","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/guacamole-server@0.9.9-2build1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.9-2","0.9.9-2build1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.9.9-2build1","binary_name":"guacd"},{"binary_version":"0.9.9-2build1","binary_name":"libguac-client-rdp0"},{"binary_version":"0.9.9-2build1","binary_name":"libguac-client-ssh0"},{"binary_version":"0.9.9-2build1","binary_name":"libguac-client-telnet0"},{"binary_version":"0.9.9-2build1","binary_name":"libguac-client-vnc0"},{"binary_version":"0.9.9-2build1","binary_name":"libguac11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3158.json"}},{"package":{"name":"guacamole-server","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/guacamole-server@1.3.0-1.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-1","1.3.0-1build1","1.3.0-1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.0-1.1","binary_name":"guacd"},{"binary_version":"1.3.0-1.1","binary_name":"libguac-client-rdp0"},{"binary_version":"1.3.0-1.1","binary_name":"libguac-client-ssh0"},{"binary_version":"1.3.0-1.1","binary_name":"libguac-client-telnet0"},{"binary_version":"1.3.0-1.1","binary_name":"libguac-client-vnc0"},{"binary_version":"1.3.0-1.1","binary_name":"libguac19"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3158.json"}},{"package":{"name":"guacamole-server","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/guacamole-server@1.3.0-1.3ubuntu1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-1.1","1.3.0-1.3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.0-1.3ubuntu1","binary_name":"guacd"},{"binary_version":"1.3.0-1.3ubuntu1","binary_name":"libguac-client-rdp0t64"},{"binary_version":"1.3.0-1.3ubuntu1","binary_name":"libguac-client-ssh0t64"},{"binary_version":"1.3.0-1.3ubuntu1","binary_name":"libguac-client-telnet0t64"},{"binary_version":"1.3.0-1.3ubuntu1","binary_name":"libguac-client-vnc0t64"},{"binary_version":"1.3.0-1.3ubuntu1","binary_name":"libguac19t64"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-3158.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}