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Ubuntu Security Notice USN-4451-1

Ubuntu Security Notice USN-4451-1
Posted Aug 5, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4451-1 - Thomas Chauchefoin discovered that ppp incorrectly handled module loading. A local attacker could use this issue to load arbitrary kernel modules and possibly execute arbitrary code.

tags | advisory, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-15704
MD5 | dba7822ad99b626b4da28d4558490343

Ubuntu Security Notice USN-4451-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4451-1
August 04, 2020

ppp vulnerability
==========================================================================

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

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

Summary:

ppp could be made to load arbitrary kernel modules and possibly run
programs.

Software Description:
- ppp: Point-to-Point Protocol (PPP)

Details:

Thomas Chauchefoin discovered that ppp incorrectly handled module loading.
A local attacker could use this issue to load arbitrary kernel modules and
possibly execute arbitrary code.

Update instructions:

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

Ubuntu 20.04 LTS:
ppp 2.4.7-2+4.1ubuntu5.1

Ubuntu 18.04 LTS:
ppp 2.4.7-2+2ubuntu1.3

Ubuntu 16.04 LTS:
ppp 2.4.7-1+2ubuntu1.16.04.3

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

References:
https://usn.ubuntu.com/4451-1
CVE-2020-15704

Package Information:
https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+4.1ubuntu5.1
https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+2ubuntu1.3
https://launchpad.net/ubuntu/+source/ppp/2.4.7-1+2ubuntu1.16.04.3
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