zsh: The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor

The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es): * zsh: insecure dropping of privileges when unsetting PRIVILEGED option (CVE-2019-20044) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed