zsh: insecure dropping of privileges when unsetting PRIVILEGED option

A flaw was found in zsh. When unsetting the PRIVILEGED option, the shell sets its effective user and group IDs to match their respective real IDs. When the RUID and EUID were both non-zero, it is possible to regain the shell's former privileges. Also, the setopt built-in did not correctly report...

zsh: insecure dropping of privileges when unsetting PRIVILEGED option

A flaw was found in zsh. When unsetting the PRIVILEGED option, the shell sets its effective user and group IDs to match their respective real IDs. When the RUID and EUID were both non-zero, it is possible to regain the shell's former privileges. Also, the setopt built-in did not correctly report...