{"id":"UBUNTU-CVE-2016-20038","details":"yTree 1.94-1.1 contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying an excessively long argument to the application. Attackers can craft a malicious command-line argument containing shellcode and a return address to overwrite the stack and execute code in the application context.","modified":"2026-05-20T16:03:19.322237194Z","published":"2026-03-28T12:15:00Z","upstream":["CVE-2016-20038"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-20038"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-20038"},{"type":"REPORT","url":"https://www.exploit-db.com/exploits/39406"},{"type":"REPORT","url":"http://www.han.de/~werner/ytree.html"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/ytree-stack-based-buffer-overflow"}],"affected":[{"package":{"name":"ytree","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.94-1.1","1.94-1.1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.94-1.1build1","binary_name":"ytree"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}},{"package":{"name":"ytree","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.94-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.94-2","binary_name":"ytree"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}},{"package":{"name":"ytree","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"ytree","binary_version":"1.99pl1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}},{"package":{"name":"ytree","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.99pl1-2","binary_name":"ytree"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}},{"package":{"name":"ytree","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.1","1.99pl1-2.2","1.99pl1-2.2build1","1.99pl1-2.2build2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.99pl1-2.2build2","binary_name":"ytree"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}},{"package":{"name":"ytree","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"ytree","binary_version":"1.99pl1-2.2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}},{"package":{"name":"ytree","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/ytree?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.99pl1-2.2build2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.99pl1-2.2build2","binary_name":"ytree"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-20038.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}