ipmasq: insecure packet filtering rules [LWN.net]

Package(s):

ipmasq

CVE #(s):

CAN-2003-0785

Created:

September 22, 2003

Updated:

September 24, 2003

Description:

ipmasq is a package which simplifies configuration of Linux IP masquerading, a form of network address translation which allows a number of hosts to share a single public IP address. Due to use of certain improper filtering rules, traffic arriving on the external interface addressed for an internal host would be forwarded, regardless of whether it was associated with an established connection. This vulnerability could be exploited by an attacker capable of forwarding IP traffic with an arbitrary destination address to the external interface of a system with ipmasq installed.

Alerts:

Debian

DSA-389-1

2003-09-20

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