{"id":"UBUNTU-CVE-2023-2253","details":"A flaw was found in the `/v2/_catalog` endpoint in distribution/distribution, which accepts a parameter to control the maximum number of records returned (query string: `n`). This vulnerability allows a malicious user to submit an unreasonably large value for `n,` causing the allocation of a massive string array, possibly causing a denial of service through excessive use of memory.","modified":"2026-02-04T02:18:33.610109Z","published":"2023-06-06T20:15:00Z","related":["USN-6336-1"],"upstream":["CVE-2023-2253"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-2253"},{"type":"REPORT","url":"https://github.com/distribution/distribution/commit/521ea3d973cb0c7089ebbcdd4ccadc34be941f54"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2023/05/09/1"},{"type":"REPORT","url":"https://github.com/distribution/distribution/security/advisories/GHSA-hqxw-f8mx-cpmw"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6336-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-2253"}],"affected":[{"package":{"name":"docker-registry","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/docker-registry@2.3.0~ds1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0~ds1-1ubuntu0.1~esm1"}]}],"versions":["2.1.1~ds1-4","2.1.1~ds1-4ubuntu1","2.3.0~ds1-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"docker-registry","binary_version":"2.3.0~ds1-1ubuntu0.1~esm1"},{"binary_name":"golang-github-docker-distribution-dev","binary_version":"2.3.0~ds1-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-2253.json"}},{"package":{"name":"docker-registry","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/docker-registry@2.6.2~ds1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.2~ds1-1ubuntu0.1~esm1"}]}],"versions":["2.6.2~ds1-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"docker-registry","binary_version":"2.6.2~ds1-1ubuntu0.1~esm1"},{"binary_name":"golang-github-docker-distribution-dev","binary_version":"2.6.2~ds1-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-2253.json"}},{"package":{"name":"docker-registry","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/docker-registry@2.7.1+ds2-7ubuntu0.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.1+ds2-7ubuntu0.3"}]}],"versions":["2.6.2~ds1-2","2.7.1~ds1-2","2.7.1~ds1-3","2.7.1~ds1-4","2.7.1+ds2-5","2.7.1+ds2-7","2.7.1+ds2-7ubuntu0.1","2.7.1+ds2-7ubuntu0.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"docker-registry","binary_version":"2.7.1+ds2-7ubuntu0.3"},{"binary_name":"golang-github-docker-distribution-dev","binary_version":"2.7.1+ds2-7ubuntu0.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-2253.json"}},{"package":{"name":"docker-registry","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/docker-registry@2.8.0+ds1-4ubuntu0.1~esm2?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.0+ds1-4ubuntu0.1~esm2"}]}],"versions":["2.7.1+ds2-7build2","2.8.0+ds1-4","2.8.0+ds1-4ubuntu0.1~esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"2.8.0+ds1-4ubuntu0.1~esm2","binary_name":"docker-registry"},{"binary_name":"golang-github-docker-distribution-dev","binary_version":"2.8.0+ds1-4ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-2253.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}