{"id":"UBUNTU-CVE-2021-27922","details":"Pillow before 8.1.2 allows attackers to cause a denial of service (memory consumption) because the reported size of a contained image is not properly checked for an ICNS container, and thus an attempted memory allocation can be very large.","modified":"2026-04-02T18:31:22.733212Z","published":"2021-03-03T09:15:00Z","related":["USN-4763-1"],"upstream":["CVE-2021-27922"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-27922"},{"type":"REPORT","url":"https://pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4763-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-27922"}],"affected":[{"package":{"name":"pillow","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/pillow@3.1.2-0ubuntu1.6?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.2-0ubuntu1.6"}]}],"versions":["2.9.0-1","3.0.0-1","3.0.0-1build1","3.1.0-1","3.1.1-1","3.1.2-0ubuntu1","3.1.2-0ubuntu1.1","3.1.2-0ubuntu1.3","3.1.2-0ubuntu1.4","3.1.2-0ubuntu1.5"],"ecosystem_specific":{"binaries":[{"binary_name":"python-imaging","binary_version":"3.1.2-0ubuntu1.6"},{"binary_version":"3.1.2-0ubuntu1.6","binary_name":"python-pil"},{"binary_name":"python-pil.imagetk","binary_version":"3.1.2-0ubuntu1.6"},{"binary_name":"python3-pil","binary_version":"3.1.2-0ubuntu1.6"},{"binary_version":"3.1.2-0ubuntu1.6","binary_name":"python3-pil.imagetk"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-27922.json"}},{"package":{"name":"pillow","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/pillow@5.1.0-1ubuntu0.5?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.0-1ubuntu0.5"}]}],"versions":["4.1.1-3build2","4.3.0-2ubuntu1","5.0.0-1","5.1.0-1","5.1.0-1ubuntu0.2","5.1.0-1ubuntu0.3","5.1.0-1ubuntu0.4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python-pil","binary_version":"5.1.0-1ubuntu0.5"},{"binary_name":"python-pil.imagetk","binary_version":"5.1.0-1ubuntu0.5"},{"binary_name":"python3-pil","binary_version":"5.1.0-1ubuntu0.5"},{"binary_name":"python3-pil.imagetk","binary_version":"5.1.0-1ubuntu0.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-27922.json"}},{"package":{"name":"pillow","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/pillow@7.0.0-4ubuntu0.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.0-4ubuntu0.3"}]}],"versions":["6.1.0-1","6.1.0-1build1","6.2.1-2","7.0.0-4","7.0.0-4build1","7.0.0-4ubuntu0.1","7.0.0-4ubuntu0.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"python3-pil","binary_version":"7.0.0-4ubuntu0.3"},{"binary_name":"python3-pil.imagetk","binary_version":"7.0.0-4ubuntu0.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-27922.json"}},{"package":{"name":"pillow-python2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/pillow-python2@6.2.1-3ubuntu0.1~esm2?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.1-3~build1","6.2.1-3","6.2.1-3ubuntu0.1~esm1","6.2.1-3ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"python-pil","binary_version":"6.2.1-3ubuntu0.1~esm2"},{"binary_name":"python-pil.imagetk","binary_version":"6.2.1-3ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-27922.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"}]}