Ubuntu Security Notice USN-12-1 October 29, 2004
ppp Denial of Service http://www.securityfocus.com/archive/1/379450
A security issue affects the following Ubuntu releases:
Ubuntu 4.10 (Warty Warthog)
The following packages are affected:
The problem can be corrected by upgrading the affected packages to
version 2.4.2+20040428-2ubuntu6.2. In general, a standard system
upgrade is sufficient to effect the necessary changes.
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.