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Ubuntu 18.04 LTS USN-3810-1 Critical: PPP Denial Of Service

ubuntu
Calendar Grey November 6, 2018
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-3810-1 November 06, 2018 ppp vulnerability A security issue affects these
ppp could be made to crash or bypass authentication if it received specially crafted network traffic.

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.

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu authentication bypass ppp

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://ubuntu.com/security/notices/USN-3810-1

CVE-2018-11574

Severity
critical
Lowest
Low
Medium
High
Critical

November 06, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu authentication bypass ppp

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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