{"id":"UBUNTU-CVE-2021-33516","details":"An issue was discovered in GUPnP before 1.0.7 and 1.1.x and 1.2.x before 1.2.5. It allows DNS rebinding. A remote web server can exploit this vulnerability to trick a victim's browser into triggering actions against local UPnP services implemented using this library. Depending on the affected service, this could be used for data exfiltration, data tempering, etc.","modified":"2026-04-22T12:54:42.654030Z","published":"2021-05-24T15:15:00Z","related":["USN-4970-1"],"upstream":["CVE-2021-33516"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-33516"},{"type":"REPORT","url":"https://discourse.gnome.org/t/security-relevant-releases-for-gupnp-issue-cve-2021-33516/6536"},{"type":"REPORT","url":"https://gitlab.gnome.org/GNOME/gupnp/-/issues/24"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4970-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-33516"}],"affected":[{"package":{"name":"gupnp","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gupnp@0.20.16-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.20.14-1","0.20.15-1","0.20.15-1ubuntu1","0.20.16-1"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gupnp-1.0","binary_version":"0.20.16-1"},{"binary_name":"libgupnp-1.0-4","binary_version":"0.20.16-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33516.json"}},{"package":{"name":"gupnp","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gupnp@1.0.2-2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.1-1","1.0.2-1","1.0.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-gupnp-1.0","binary_version":"1.0.2-2"},{"binary_name":"libgupnp-1.0-4","binary_version":"1.0.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33516.json"}},{"package":{"name":"gupnp","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gupnp@1.2.3-0ubuntu0.20.04.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.3-0ubuntu0.20.04.2"}]}],"versions":["1.2.1-1","1.2.1-2","1.2.2-1","1.2.3-0ubuntu0.20.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.2.3-0ubuntu0.20.04.2","binary_name":"gir1.2-gupnp-1.2"},{"binary_name":"libgupnp-1.2-0","binary_version":"1.2.3-0ubuntu0.20.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33516.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}