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.(CVE-2018-0502 __)
It was discovered that zsh does not properly validate the shebang of input files and it truncates it to the first 64 bytes. A local attacker may use this flaw to make zsh execute a different binary than what is expected, named with a substring of the shebang one.(CVE-2018-13259 __)
Run yum update zsh to update your system.
i686: zsh-5.5.1-2.amzn2.0.1.i686 zsh-debuginfo-5.5.1-2.amzn2.0.1.i686 noarch: zsh-html-5.5.1-2.amzn2.0.1.noarch src: zsh-5.5.1-2.amzn2.0.1.src x86_64: zsh-5.5.1-2.amzn2.0.1.x86_64 zsh-debuginfo-5.5.1-2.amzn2.0.1.x86_64