PPTPD: Denial of Service attack

1. Gentoo Linux Security Advisory

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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