{"id":"UBUNTU-CVE-2020-13529","details":"An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.","modified":"2026-03-24T10:58:55.453261Z","published":"2021-05-10T16:15:00Z","related":["USN-5013-1","USN-5013-2"],"upstream":["CVE-2020-13529"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-13529"},{"type":"REPORT","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1142"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5013-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5013-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-13529"}],"affected":[{"package":{"name":"systemd","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/systemd@204-5ubuntu20.31+esm3?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["204-0ubuntu18","204-0ubuntu19","204-5ubuntu3","204-5ubuntu5","204-5ubuntu6","204-5ubuntu7","204-5ubuntu8","204-5ubuntu9","204-5ubuntu10","204-5ubuntu11","204-5ubuntu13","204-5ubuntu14","204-5ubuntu15","204-5ubuntu16","204-5ubuntu17","204-5ubuntu18","204-5ubuntu19","204-5ubuntu20","204-5ubuntu20.2","204-5ubuntu20.3","204-5ubuntu20.4","204-5ubuntu20.5","204-5ubuntu20.6","204-5ubuntu20.7","204-5ubuntu20.8","204-5ubuntu20.9","204-5ubuntu20.10","204-5ubuntu20.11","204-5ubuntu20.12","204-5ubuntu20.13","204-5ubuntu20.14","204-5ubuntu20.15","204-5ubuntu20.18","204-5ubuntu20.19","204-5ubuntu20.20","204-5ubuntu20.21","204-5ubuntu20.22","204-5ubuntu20.24","204-5ubuntu20.25","204-5ubuntu20.26","204-5ubuntu20.28","204-5ubuntu20.29","204-5ubuntu20.31","204-5ubuntu20.31+esm2","204-5ubuntu20.31+esm3"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gudev-1.0","binary_version":"1:204-5ubuntu20.31+esm3"},{"binary_name":"libgudev-1.0-0","binary_version":"1:204-5ubuntu20.31+esm3"},{"binary_name":"libgudev-1.0-dev","binary_version":"1:204-5ubuntu20.31+esm3"},{"binary_name":"libpam-systemd","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-daemon-dev","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-daemon0","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-id128-0","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-id128-dev","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-journal-dev","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-journal0","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-login-dev","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libsystemd-login0","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libudev-dev","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"libudev1","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"python-systemd","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"systemd","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"systemd-services","binary_version":"204-5ubuntu20.31+esm3"},{"binary_name":"udev","binary_version":"204-5ubuntu20.31+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13529.json"}},{"package":{"name":"systemd","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/systemd@229-4ubuntu21.31+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"229-4ubuntu21.31+esm1"}]}],"versions":["225-1ubuntu9","227-2ubuntu1","227-2ubuntu2","228-1ubuntu2","228-2ubuntu1","228-2ubuntu2","228-3ubuntu1","228-4ubuntu1","228-4ubuntu2","228-5ubuntu1","228-5ubuntu2","228-5ubuntu3","228-6ubuntu1","229-1ubuntu2","229-1ubuntu4","229-2ubuntu1","229-3ubuntu1","229-3ubuntu2","229-4ubuntu1","229-4ubuntu4","229-4ubuntu5","229-4ubuntu6","229-4ubuntu7","229-4ubuntu8","229-4ubuntu10","229-4ubuntu11","229-4ubuntu12","229-4ubuntu13","229-4ubuntu16","229-4ubuntu17","229-4ubuntu19","229-4ubuntu20","229-4ubuntu21","229-4ubuntu21.1","229-4ubuntu21.2","229-4ubuntu21.3","229-4ubuntu21.4","229-4ubuntu21.5","229-4ubuntu21.6","229-4ubuntu21.8","229-4ubuntu21.9","229-4ubuntu21.10","229-4ubuntu21.15","229-4ubuntu21.16","229-4ubuntu21.17","229-4ubuntu21.19","229-4ubuntu21.21","229-4ubuntu21.22","229-4ubuntu21.23","229-4ubuntu21.27","229-4ubuntu21.28","229-4ubuntu21.29","229-4ubuntu21.31"],"ecosystem_specific":{"availability":"Available 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