{"id":"UBUNTU-CVE-2020-15396","details":"In HylaFAX+ through 7.0.2 and HylaFAX Enterprise, the faxsetup utility calls chown on files in user-owned directories. By winning a race, a local attacker could use this to escalate his privileges to root.","modified":"2026-05-20T16:04:12.123690798Z","published":"2020-06-30T12:15:00Z","upstream":["CVE-2020-15396"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-15396"},{"type":"REPORT","url":"https://sourceforge.net/p/hylafax/HylaFAX+/2534/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-15396"}],"affected":[{"package":{"name":"hylafax","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.6-6","3:6.0.6-6+deb8u1build0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"hylafax-client","binary_version":"3:6.0.6-6+deb8u1build0.16.04.1"},{"binary_version":"3:6.0.6-6+deb8u1build0.16.04.1","binary_name":"hylafax-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}},{"package":{"name":"hylafax","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.6-8","3:6.0.6-8.1~ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"hylafax-client","binary_version":"3:6.0.6-8.1~ubuntu0.18.04.1"},{"binary_version":"3:6.0.6-8.1~ubuntu0.18.04.1","binary_name":"hylafax-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}},{"package":{"name":"hylafax","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.6-8.1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"hylafax-client","binary_version":"3:6.0.6-8.1build1"},{"binary_name":"hylafax-server","binary_version":"3:6.0.6-8.1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}},{"package":{"name":"hylafax","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.7-3.1"],"ecosystem_specific":{"binaries":[{"binary_version":"3:6.0.7-3.1","binary_name":"hylafax-client"},{"binary_version":"3:6.0.7-3.1","binary_name":"hylafax-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}},{"package":{"name":"hylafax","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.7-5build1","3:6.0.7-7"],"ecosystem_specific":{"binaries":[{"binary_version":"3:6.0.7-7","binary_name":"hylafax-client"},{"binary_name":"hylafax-server","binary_version":"3:6.0.7-7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}},{"package":{"name":"hylafax","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.7-11.1","3:6.0.7-13"],"ecosystem_specific":{"binaries":[{"binary_version":"3:6.0.7-13","binary_name":"hylafax-client"},{"binary_name":"hylafax-server","binary_version":"3:6.0.7-13"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}},{"package":{"name":"hylafax","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/hylafax?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3:6.0.7-13","3:6.0.7-13build1"],"ecosystem_specific":{"binaries":[{"binary_name":"hylafax-client","binary_version":"3:6.0.7-13build1"},{"binary_name":"hylafax-server","binary_version":"3:6.0.7-13build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15396.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}