{"id":"UBUNTU-CVE-2018-9918","details":"libqpdf.a in QPDF through 8.0.2 mishandles certain \"expected dictionary key but found non-name object\" cases, allowing remote attackers to cause a denial of service (stack exhaustion), related to the QPDFObjectHandle and QPDF_Dictionary classes, because nesting in direct objects is not restricted.","modified":"2026-04-22T13:23:41.329628Z","published":"2018-04-10T00:00:00Z","related":["USN-3638-1"],"upstream":["CVE-2018-9918"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-9918"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3638-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-9918"}],"affected":[{"package":{"name":"qpdf","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/qpdf@8.0.2-3~14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.2-3~14.04.1"}]}],"versions":["4.2.0-2","5.0.1-1","5.0.1-1ubuntu1","5.1.0-1","5.1.1-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"8.0.2-3~14.04.1","binary_name":"libqpdf21"},{"binary_name":"qpdf","binary_version":"8.0.2-3~14.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-9918.json"}},{"package":{"name":"qpdf","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/qpdf@8.0.2-3~16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.2-3~16.04.1"}]}],"versions":["5.1.3-2","5.1.3-3","5.2.0-1","5.2.0-2","6.0.0-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libqpdf21","binary_version":"8.0.2-3~16.04.1"},{"binary_name":"qpdf","binary_version":"8.0.2-3~16.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-9918.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}