USN-4451-1: ppp vulnerability

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• ppp - Point-to-Point Protocol (PPP)

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

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

Ubuntu 20.04

• ppp - 2.4.7-2+4.1ubuntu5.1

Ubuntu 18.04

• ppp - 2.4.7-2+2ubuntu1.3

Ubuntu 16.04

• ppp - 2.4.7-1+2ubuntu1.16.04.3

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

References

• CVE-2020-15704

Related notices

• USN-4451-2: ppp, ppp-udeb, ppp-dev