Ubuntu Security Update USN-4605-2: Blueman update

[LinuxBot]

Vaisha Bernard discovered that blueman did not properly sanitize input on the d-bus interface to blueman-mechanism. A local attacker could possibly use this issue to escalate privileges and run arbitrary code or cause a denial of service. (CVE-2020-15238) While a previous security update fixed the issue, this update provides additional improvements by enabling PolicyKit authentication for privileged commands.

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