Ubuntu Security Update USN-5325-1: Zsh vulnerabilities

[LinuxBot]

Sam Foxman discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this issue to regain dropped privileges. (CVE-2019-20044) It was discovered that Zsh incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2021-45444)

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