{"id":"UBUNTU-CVE-2018-0502","details":"An issue was discovered in zsh before 5.6. The beginning of a #! script file was mishandled, potentially leading to an execve call to a program named on the second line.","modified":"2026-04-22T11:38:36.483816Z","published":"2018-09-05T00:00:00Z","related":["USN-3764-1"],"upstream":["CVE-2018-0502"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-0502"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3764-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-0502"}],"affected":[{"package":{"name":"zsh","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/zsh@5.0.2-3ubuntu6.3?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.0.2-3ubuntu6.3"}]}],"versions":["5.0.2-3ubuntu6","5.0.2-3ubuntu6.1","5.0.2-3ubuntu6.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"zsh","binary_version":"5.0.2-3ubuntu6.3"},{"binary_name":"zsh-beta","binary_version":"5.0.2-3ubuntu6.3"},{"binary_name":"zsh-common","binary_version":"5.0.2-3ubuntu6.3"},{"binary_name":"zsh-static","binary_version":"5.0.2-3ubuntu6.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-0502.json"}},{"package":{"name":"zsh","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/zsh@5.1.1-1ubuntu2.3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.1-1ubuntu2.3"}]}],"versions":["5.1.1-1ubuntu1","5.1.1-1ubuntu2","5.1.1-1ubuntu2.1","5.1.1-1ubuntu2.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"zsh","binary_version":"5.1.1-1ubuntu2.3"},{"binary_name":"zsh-common","binary_version":"5.1.1-1ubuntu2.3"},{"binary_name":"zsh-static","binary_version":"5.1.1-1ubuntu2.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-0502.json"}},{"package":{"name":"zsh","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/zsh@5.4.2-3ubuntu3.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.2-3ubuntu3.1"}]}],"versions":["5.2-5ubuntu1","5.4.2-3ubuntu1","5.4.2-3ubuntu2","5.4.2-3ubuntu3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"zsh","binary_version":"5.4.2-3ubuntu3.1"},{"binary_name":"zsh-common","binary_version":"5.4.2-3ubuntu3.1"},{"binary_name":"zsh-static","binary_version":"5.4.2-3ubuntu3.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-0502.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:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}