Ubuntu Security Update USN-7867-1: sudo-rs vulnerabilities

[LinuxBot]

It was discovered that sudo-rs incorrectly handled passwords when timeouts occurred and the pwfeedback default was not set. This could result in a partially typed password being output to standard input, contrary to expectations. It was discovered that sudo-rs incorrectly handled the targetpw and rootpw default settings when creating timestamp files. A local attacker could possibly use this issue to bypass authentication in certain configurations.

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