{"id":"UBUNTU-CVE-2020-15704","details":"The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.","modified":"2026-04-22T12:30:46.957631Z","published":"2020-08-04T17:00:00Z","related":["USN-4451-1","USN-4451-2"],"upstream":["CVE-2020-15704"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-15704"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4451-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4451-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-15704"}],"affected":[{"package":{"name":"ppp","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/ppp@2.4.5-5.1ubuntu2.3+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-5.1ubuntu2.3+esm2"}]}],"versions":["2.4.5-5.1ubuntu2","2.4.5-5.1ubuntu2.1","2.4.5-5.1ubuntu2.2","2.4.5-5.1ubuntu2.3","2.4.5-5.1ubuntu2.3+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"ppp","binary_version":"2.4.5-5.1ubuntu2.3+esm2"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15704.json"}},{"package":{"name":"ppp","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ppp@2.4.7-1+2ubuntu1.16.04.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1+2ubuntu1.16.04.3"}]}],"versions":["2.4.6-3.1ubuntu1","2.4.7-1+1ubuntu1","2.4.7-1+2ubuntu1","2.4.7-1+2ubuntu1.16.04.1","2.4.7-1+2ubuntu1.16.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ppp","binary_version":"2.4.7-1+2ubuntu1.16.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15704.json"}},{"package":{"name":"ppp","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ppp@2.4.7-2+2ubuntu1.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+2ubuntu1.3"}]}],"versions":["2.4.7-1+2ubuntu1","2.4.7-1+4ubuntu1","2.4.7-1+4ubuntu3","2.4.7-2+1ubuntu1","2.4.7-2+2ubuntu1","2.4.7-2+2ubuntu1.1","2.4.7-2+2ubuntu1.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ppp","binary_version":"2.4.7-2+2ubuntu1.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15704.json"}},{"package":{"name":"ppp","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ppp@2.4.7-2+4.1ubuntu5.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+4.1ubuntu5.1"}]}],"versions":["2.4.7-2+4.1ubuntu4","2.4.7-2+4.1ubuntu5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"ppp","binary_version":"2.4.7-2+4.1ubuntu5.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15704.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:N/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}