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Ubuntu Security Notice USN-4538-1

Ubuntu Security Notice USN-4538-1
Posted Sep 24, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4538-1 - Vaisha Bernard discovered that PackageKit incorrectly handled certain methods. A local attacker could use this issue to learn the MIME type of any file on the system. Sami Niemimäki discovered that PackageKit incorrectly handled local deb packages. A local user could possibly use this issue to install untrusted packages, contrary to expectations.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2020-16121, CVE-2020-16122
SHA-256 | 0727ab6776e639630a5e5a5e7b10a7c0f2d23864de9dee99c279ad03b990ae7e

Ubuntu Security Notice USN-4538-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4538-1
September 24, 2020

packagekit vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in PackageKit.

Software Description:
- packagekit: Provides a package management service

Details:

Vaisha Bernard discovered that PackageKit incorrectly handled certain
methods. A local attacker could use this issue to learn the MIME type of
any file on the system. (CVE-2020-16121)

Sami Niemimäki discovered that PackageKit incorrectly handled local deb
packages. A local user could possibly use this issue to install untrusted
packages, contrary to expectations. (CVE-2020-16122)

Update instructions:

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

Ubuntu 20.04 LTS:
packagekit 1.1.13-2ubuntu1.1

Ubuntu 18.04 LTS:
packagekit 1.1.9-1ubuntu2.18.04.6

Ubuntu 16.04 LTS:
packagekit 0.8.17-4ubuntu6~gcc5.4ubuntu1.5

After a standard system update you need to reboot your computer to make all
the necessary changes.

References:
https://usn.ubuntu.com/4538-1
CVE-2020-16121, CVE-2020-16122

Package Information:
https://launchpad.net/ubuntu/+source/packagekit/1.1.13-2ubuntu1.1
https://launchpad.net/ubuntu/+source/packagekit/1.1.9-1ubuntu2.18.04.6
https://launchpad.net/ubuntu/+source/packagekit/0.8.17-4ubuntu6~gcc5.4ubuntu1.5
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