{"id":"UBUNTU-CVE-2021-46828","details":"In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.","modified":"2026-04-22T15:05:36.955972Z","published":"2022-07-20T06:15:00Z","related":["USN-5538-1"],"upstream":["CVE-2021-46828"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-46828"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5538-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-46828"}],"affected":[{"package":{"name":"ntirpc","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ntirpc@1.3.1-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libntirpc1.3","binary_version":"1.3.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46828.json"}},{"package":{"name":"libtirpc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libtirpc@1.2.5-1ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.5-1ubuntu0.1"}]}],"versions":["1.1.4-0.4","1.1.4-1","1.2.5-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.2.5-1ubuntu0.1","binary_name":"libtirpc-common"},{"binary_name":"libtirpc3","binary_version":"1.2.5-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46828.json"}},{"package":{"name":"libtirpc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libtirpc@1.3.2-2ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2-2ubuntu0.1"}]}],"versions":["1.3.2-2","1.3.2-2build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libtirpc-common","binary_version":"1.3.2-2ubuntu0.1"},{"binary_name":"libtirpc3","binary_version":"1.3.2-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-46828.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}