{"id":"UBUNTU-CVE-2021-28153","details":"An issue was discovered in GNOME GLib before 2.66.8. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION to replace a path that is a dangling symlink, it incorrectly also creates the target of the symlink as an empty file, which could conceivably have security relevance if the symlink is attacker-controlled. (If the path is a symlink to a file that already exists, then the contents of that file correctly remain unchanged.)","modified":"2026-09-21T21:34:20.524849005Z","published":"2021-03-11T22:15:00Z","related":["USN-4764-1"],"upstream":["CVE-2021-28153"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28153"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4764-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-28153"}],"affected":[{"package":{"name":"glib2.0","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.38.0-1ubuntu1","2.38.1-1","2.39.1-0ubuntu1","2.39.1-0ubuntu2","2.39.1-0ubuntu3","2.39.2-0ubuntu1","2.39.2-0ubuntu2","2.39.3-0ubuntu4","2.39.4-0ubuntu1","2.39.90-0ubuntu1","2.39.91-0ubuntu2","2.39.91-0ubuntu3","2.39.92-2","2.40.0-1","2.40.0-1ubuntu1","2.40.0-2","2.40.2-0ubuntu1","2.40.2-0ubuntu1.1","2.40.2-0ubuntu1.1+esm1","2.40.2-0ubuntu1.1+esm2","2.40.2-0ubuntu1.1+esm3","2.40.2-0ubuntu1.1+esm4","2.40.2-0ubuntu1.1+esm6","2.40.2-0ubuntu1.1+esm7","2.40.2-0ubuntu1.1+esm8"],"ecosystem_specific":{"binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.40.2-0ubuntu1.1+esm8"},{"binary_name":"libglib2.0-0-refdbg","binary_version":"2.40.2-0ubuntu1.1+esm8"},{"binary_name":"libglib2.0-bin","binary_version":"2.40.2-0ubuntu1.1+esm8"},{"binary_name":"libglib2.0-data","binary_version":"2.40.2-0ubuntu1.1+esm8"},{"binary_name":"libglib2.0-tests","binary_version":"2.40.2-0ubuntu1.1+esm8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28153.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.48.2-0ubuntu4.8"}]}],"versions":["2.46.1-1","2.46.1-2","2.47.1-1","2.47.3-3","2.47.4-1","2.47.5-1","2.47.6-1","2.48.0-1ubuntu3","2.48.0-1ubuntu4","2.48.1-1~ubuntu16.04.1","2.48.2-0ubuntu1","2.48.2-0ubuntu3","2.48.2-0ubuntu4","2.48.2-0ubuntu4.1","2.48.2-0ubuntu4.2","2.48.2-0ubuntu4.3","2.48.2-0ubuntu4.4","2.48.2-0ubuntu4.5","2.48.2-0ubuntu4.6","2.48.2-0ubuntu4.7"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.48.2-0ubuntu4.8"},{"binary_name":"libglib2.0-0-refdbg","binary_version":"2.48.2-0ubuntu4.8"},{"binary_version":"2.48.2-0ubuntu4.8","binary_name":"libglib2.0-bin"},{"binary_name":"libglib2.0-data","binary_version":"2.48.2-0ubuntu4.8"},{"binary_name":"libglib2.0-tests","binary_version":"2.48.2-0ubuntu4.8"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28153.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.56.4-0ubuntu0.18.04.8"}]}],"versions":["2.54.1-1ubuntu1","2.55.2-2ubuntu1","2.56.0-2ubuntu1","2.56.0-4ubuntu1","2.56.1-2ubuntu1","2.56.2-0ubuntu0.18.04.1","2.56.2-0ubuntu0.18.04.2","2.56.3-0ubuntu0.18.04.1","2.56.4-0ubuntu0.18.04.2","2.56.4-0ubuntu0.18.04.3","2.56.4-0ubuntu0.18.04.4","2.56.4-0ubuntu0.18.04.5","2.56.4-0ubuntu0.18.04.6","2.56.4-0ubuntu0.18.04.7"],"ecosystem_specific":{"binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.56.4-0ubuntu0.18.04.8"},{"binary_name":"libglib2.0-bin","binary_version":"2.56.4-0ubuntu0.18.04.8"},{"binary_name":"libglib2.0-data","binary_version":"2.56.4-0ubuntu0.18.04.8"},{"binary_version":"2.56.4-0ubuntu0.18.04.8","binary_name":"libglib2.0-dev-bin"},{"binary_name":"libglib2.0-tests","binary_version":"2.56.4-0ubuntu0.18.04.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28153.json"}},{"package":{"name":"glib2.0","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/glib2.0?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.64.6-1~ubuntu20.04.3"}]}],"versions":["2.62.1-1","2.63.1-2","2.63.1-2ubuntu1","2.63.3-1","2.63.3-3","2.63.5-2","2.64.0-1","2.64.1-1","2.64.2-1~fakesync1","2.64.3-1~ubuntu20.04.1","2.64.6-1~ubuntu20.04.1","2.64.6-1~ubuntu20.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libglib2.0-0","binary_version":"2.64.6-1~ubuntu20.04.3"},{"binary_name":"libglib2.0-bin","binary_version":"2.64.6-1~ubuntu20.04.3"},{"binary_name":"libglib2.0-data","binary_version":"2.64.6-1~ubuntu20.04.3"},{"binary_version":"2.64.6-1~ubuntu20.04.3","binary_name":"libglib2.0-dev-bin"},{"binary_name":"libglib2.0-tests","binary_version":"2.64.6-1~ubuntu20.04.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28153.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}