1. Ubuntu Security Notices
  2. USN-4451-2

USN-4451-2: ppp vulnerability

Publication date

6 August 2020

Overview

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

Releases

Packages

  • ppp - Point-to-Point Protocol (PPP)

Details

USN-4451-1 fixed a vulnerability in ppp. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative,
discovered that ppp incorrectly handled module loading. A local attacker
could use this issue to load arbitrary kernel modules and possibly execute
arbitrary code.

USN-4451-1 fixed a vulnerability in ppp. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative,
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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
14.04 trusty ppp –  2.4.5-5.1ubuntu2.3+esm2
12.04 precise ppp –  2.4.5-5ubuntu1.4

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References

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