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Ubuntu Security Notice USN-4605-2

Ubuntu Security Notice USN-4605-2
Posted Nov 3, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4605-2 - 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. While a previous security update fixed the issue, this update provides additional improvements by enabling PolicyKit authentication for privileged commands. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2020-15238
SHA-256 | a002dc8f38994b9b14e4c9d270098dbd18203170e58487b85174d6fd4cf21c4c

Ubuntu Security Notice USN-4605-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4605-2
November 03, 2020

blueman vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS

Summary:

A security improvement has been made to blueman.

Software Description:
- blueman: Graphical bluetooth manager

Details:

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.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
blueman 2.1.3-2ubuntu1.1

Ubuntu 20.04 LTS:
blueman 2.1.2-1ubuntu0.2

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4605-2
https://usn.ubuntu.com/4605-1
https://launchpad.net/bugs/1897287

Package Information:
https://launchpad.net/ubuntu/+source/blueman/2.1.3-2ubuntu1.1
https://launchpad.net/ubuntu/+source/blueman/2.1.2-1ubuntu0.2
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