Linux kernel Netfilter using Network Address Translation (NAT) could leak sensitive information
|linux-netfilter-information-leak (9043)||Medium Risk|
Netfilter could allow a remote attacker to obtain sensitive information. If Network Address Translation (NAT) is being used by the firewall and is applied to the first packet of a connection, an ICMP error message could be generated by this packet, which would be sent out with the translated address. The address information sent out could allow a remote attacker to determine the Netfilter configuration and network topology information, which could be used by the attacker in preparing for further attacks against the affected network.
Apply the patch for this vulnerability, as listed in Cartel S?curit? --- Security Advisory CARTSA-20020402. See References.
- Cartel SÚcuritÚ --- Security Advisory CARTSA-20020402: Linux Netfilter NAT/ICMP code information leak.
- Hewlett-Packard Company Security Bulletin HPSBTL0205-039: Security vulnerability in Netfilter. (From SecurityFocus archive.)
- BID-4699: Linux NetFilter NAT Information Leakage Vulnerability
- CVE-2002-0704: The Network Address Translation (NAT) capability for Netfilter (iptables) 1.2.6a and earlier leaks translated IP addresses in ICMP error messages.
- MDKSA-2002:030: Temporary fix for iptables NAT/ICMP information leak
- OSVDB ID: 5130: Linux IPTables/Netfilter Internal Translated IP Disclosure
- RHSA-2002-086: Netfilter information leak
- HP Secure OS 1.0
- Linux Kernel 2.4.10
- Linux Kernel 2.4.11
- Linux Kernel 2.4.12
- Linux Kernel 2.4.13
- Linux Kernel 2.4.14
- Linux Kernel 2.4.15
- Linux Kernel 2.4.16
- Linux Kernel 2.4.17
- Linux Kernel 2.4.18
- Linux Kernel 2.4.19 pre2
- Linux Kernel 2.4.19 pre3
- Linux Kernel 2.4.19 pre4
- Linux Kernel 2.4.19 pre5
- Linux Kernel 2.4.19 pre6
- Linux Kernel 2.4.19 pre1
- Linux Kernel 2.4.4
- Linux Kernel 2.4.5
- Linux Kernel 2.4.6
- Linux Kernel 2.4.7
- Linux Kernel 2.4.8
- Linux Kernel 2.4.9
- MandrakeSoft Mandrake Linux 8.0
- MandrakeSoft Mandrake Linux 8.1
- MandrakeSoft Mandrake Linux 8.2
May 08, 2002
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.
For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this