{"id":"UBUNTU-CVE-2018-7549","details":"In params.c in zsh through 5.4.2, there is a crash during a copy of an empty hash table, as demonstrated by typeset -p.","modified":"2026-04-22T13:20:32.550715Z","published":"2018-02-27T00:00:00Z","related":["USN-3593-1"],"upstream":["CVE-2018-7549"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-7549"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3593-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-7549"}],"affected":[{"package":{"name":"zsh","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/zsh@5.0.2-3ubuntu6.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-3ubuntu6.1"}]}],"versions":["5.0.2-3ubuntu6"],"ecosystem_specific":{"binaries":[{"binary_name":"zsh","binary_version":"5.0.2-3ubuntu6.1"},{"binary_name":"zsh-beta","binary_version":"5.0.2-3ubuntu6.1"},{"binary_name":"zsh-common","binary_version":"5.0.2-3ubuntu6.1"},{"binary_name":"zsh-static","binary_version":"5.0.2-3ubuntu6.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7549.json"}},{"package":{"name":"zsh","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/zsh@5.1.1-1ubuntu2.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.1-1ubuntu2.1"}]}],"versions":["5.1.1-1ubuntu1","5.1.1-1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"zsh","binary_version":"5.1.1-1ubuntu2.1"},{"binary_name":"zsh-common","binary_version":"5.1.1-1ubuntu2.1"},{"binary_name":"zsh-static","binary_version":"5.1.1-1ubuntu2.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7549.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}