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PPTPD: Denial of Service attack


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200705-18 / pptpd
Release Date May 20, 2007
Latest Revision May 20, 2007: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-dialup/pptpd < 1.3.4 >= 1.3.4 All supported architectures

Related bugreports: #176936


A vulnerability has been reported in PPTPD which could lead to a Denial of Service.

2.  Impact Information


PPTPD is a Point-to-Point Tunnelling Protocol Daemon for Linux.


James Cameron from HP has reported a vulnerability in PPTPD caused by malformed GRE packets.


A remote attacker could exploit this vulnerability to cause a Denial of Service on the PPTPD connection.

3.  Resolution Information


There is no known workaround at this time.


All PPTPD users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dialup/pptpd-1.3.4"

4.  References


Page updated May 20, 2007

Summary: This is a Gentoo Linux Security Advisory

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