Ubuntu Security Update USN-4705-1: Sudo vulnerabilities

[LinuxBot]

It was discovered that Sudo incorrectly handled memory when parsing command lines. A local attacker could possibly use this issue to obtain unintended access to the administrator account. (CVE-2021-3156) It was discovered that the Sudo sudoedit utility incorrectly handled checking directory permissions. A local attacker could possibly use this issue to bypass file permissions and determine if a directory exists or not. (CVE-2021-23239)

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