==========================================================================
Ubuntu Security Notice USN-3810-1
November 06, 2018
ppp vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
ppp could be made to crash or bypass authentication if it received
specially crafted network traffic.
Software Description:
– ppp: Point-to-Point Protocol (PPP)
Details:
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
ppp 2.4.7-2+2ubuntu1.1
Ubuntu 16.04 LTS:
ppp 2.4.7-1+2ubuntu1.16.04.1
Ubuntu 14.04 LTS:
ppp 2.4.5-5.1ubuntu2.3
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3810-1
CVE-2018-11574
Package Information:
https://launchpad.net/ubuntu/+source/ppp/2.4.7-2+2ubuntu1.1
https://launchpad.net/ubuntu/+source/ppp/2.4.7-1+2ubuntu1.16.04.1
https://launchpad.net/ubuntu/+source/ppp/2.4.5-5.1ubuntu2.3
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