Advisory Published

USN-3810-1: ppp vulnerability

First published: Tue Nov 06 2018(Updated: )

Ivan Gotovchits discovered that ppp incorrectly handled the EAP-TLS protocol. A remote attacker could use this issue to cause ppp to crash, resulting in a denial of service, or possibly bypass authentication.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/ppp<2.4.7-2+2ubuntu1.1
2.4.7-2+2ubuntu1.1
=18.04
All of
ubuntu/ppp<2.4.7-1+2ubuntu1.16.04.1
2.4.7-1+2ubuntu1.16.04.1
=16.04
All of
ubuntu/ppp<2.4.5-5.1ubuntu2.3
2.4.5-5.1ubuntu2.3
=14.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-3810-1?

    The severity of USN-3810-1 is high.

  • How does the ppp vulnerability affect Ubuntu 18.04?

    The ppp vulnerability affects Ubuntu 18.04 and can cause ppp to crash or possibly bypass authentication.

  • How does the ppp vulnerability affect Ubuntu 16.04?

    The ppp vulnerability affects Ubuntu 16.04 and can cause ppp to crash or possibly bypass authentication.

  • How does the ppp vulnerability affect Ubuntu 14.04?

    The ppp vulnerability affects Ubuntu 14.04 and can cause ppp to crash or possibly bypass authentication.

  • How do I fix the ppp vulnerability?

    To fix the ppp vulnerability, update to version 2.4.7-2+2ubuntu1.1 for Ubuntu 18.04, version 2.4.7-1+2ubuntu1.16.04.1 for Ubuntu 16.04, or version 2.4.5-5.1ubuntu2.3 for Ubuntu 14.04.

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