{"id":"UBUNTU-CVE-2021-22883","details":"Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.","modified":"2026-04-22T14:35:57.697073Z","published":"2021-03-03T18:15:00Z","related":["USN-6418-1"],"upstream":["CVE-2021-22883"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-22883"},{"type":"REPORT","url":"https://nodejs.org/en/blog/vulnerability/february-2021-security-releases/"},{"type":"REPORT","url":"https://hackerone.com/reports/1043360"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6418-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-22883"}],"affected":[{"package":{"name":"nodejs","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/nodejs@8.10.0~dfsg-2ubuntu0.4+esm6?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.11.4~dfsg-1ubuntu1","6.11.4~dfsg-1ubuntu2","6.12.0~dfsg-1ubuntu1","6.12.0~dfsg-2ubuntu1","6.12.0~dfsg-2ubuntu2","8.10.0~dfsg-2","8.10.0~dfsg-2ubuntu0.2","8.10.0~dfsg-2ubuntu0.3","8.10.0~dfsg-2ubuntu0.4","8.10.0~dfsg-2ubuntu0.4+esm1","8.10.0~dfsg-2ubuntu0.4+esm2","8.10.0~dfsg-2ubuntu0.4+esm3","8.10.0~dfsg-2ubuntu0.4+esm4","8.10.0~dfsg-2ubuntu0.4+esm5","8.10.0~dfsg-2ubuntu0.4+esm6"],"ecosystem_specific":{"binaries":[{"binary_name":"nodejs","binary_version":"8.10.0~dfsg-2ubuntu0.4+esm6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22883.json"}},{"package":{"name":"nodejs","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/nodejs@10.19.0~dfsg-3ubuntu1.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.19.0~dfsg-3ubuntu1.2"}]}],"versions":["10.15.2~dfsg-2ubuntu1","10.17.0~dfsg-2ubuntu4","10.17.0~dfsg-2ubuntu6","10.19.0~dfsg-3ubuntu1","10.19.0~dfsg-3ubuntu1.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libnode64","binary_version":"10.19.0~dfsg-3ubuntu1.2"},{"binary_name":"nodejs","binary_version":"10.19.0~dfsg-3ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-22883.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":"Ubuntu","score":"medium"}]}