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USN-12-1: ppp Denial of Service

29 October 2004

ppp Denial of Service



It has been discovered that ppp does not properly verify certain data
structures used in the CBCP protocol. This vulnerability could allow
an attacker to cause the pppd server to crash due to an invalid memory
access, leading to a denial of service. However, there is no
possibility of code execution or privilege escalation.

Update instructions

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

Ubuntu 4.10
  • ppp -

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