PopTop PPTP Server GRE Packet Denial Of Service Vulnerability

BID:23886

Info

PopTop PPTP Server GRE Packet Denial Of Service Vulnerability

Bugtraq ID: 23886
Class: Design Error
CVE: CVE-2007-0244
Remote: Yes
Local: No
Published: May 08 2007 12:00AM
Updated: Oct 01 2007 07:29PM
Credit: This issue was disclosed to Debian Security Advisory DSA 1288-1.
Vulnerable: Ubuntu Ubuntu Linux 7.04 sparc
Ubuntu Ubuntu Linux 7.04 powerpc
Ubuntu Ubuntu Linux 7.04 i386
Ubuntu Ubuntu Linux 7.04 amd64
Ubuntu Ubuntu Linux 6.10 sparc
Ubuntu Ubuntu Linux 6.10 powerpc
Ubuntu Ubuntu Linux 6.10 i386
Ubuntu Ubuntu Linux 6.10 amd64
Ubuntu Ubuntu Linux 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
S.u.S.E. openSUSE 10.2
S.u.S.E. Linux Professional 10.2 X86 64
S.u.S.E. Linux Professional 10.2
S.u.S.E. Linux Personal 10.2 X86 64
S.u.S.E. Linux Personal 10.2
PoPToP PPTP Server 1.3.4
PoPToP PPTP Server 1.3
Gentoo Linux
Debian Linux 4.0 sparc
Debian Linux 4.0 s/390
Debian Linux 4.0 powerpc
Debian Linux 4.0 mipsel
Debian Linux 4.0 mips
Debian Linux 4.0 m68k
Debian Linux 4.0 ia-64
Debian Linux 4.0 ia-32
Debian Linux 4.0 hppa
Debian Linux 4.0 arm
Debian Linux 4.0 amd64
Debian Linux 4.0 alpha
Debian Linux 4.0
Not Vulnerable:

Discussion

PopTop PPTP Server GRE Packet Denial Of Service Vulnerability

PoPToP PPTP Server is prone to a denial-of-service vulnerability because it fails to adequately handle certain malformed packet data.

Attackers can exploit this issue to disconnect arbitrary PPTP connections.

PoPToP PPTP Server 1.3.4 is vulnerable; other versions may also be affected.

Exploit / POC

PopTop PPTP Server GRE Packet Denial Of Service Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: mailto:[email protected].

Solution / Fix

PopTop PPTP Server GRE Packet Denial Of Service Vulnerability

Solution:
Please see the referenced advisories for more information.


PoPToP PPTP Server 1.3

References

PopTop PPTP Server GRE Packet Denial Of Service Vulnerability

References:
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