CVE-2006-1242 Information

Description

The ip_push_pending_frames function in Linux 2.4.x and 2.6.x before 2.6.16 increments the IP ID field when sending a RST after receiving unsolicited TCP SYN-ACK packets which allows remote attackers to conduct an Idle Scan (nmap -sI) attack which bypasses intended protections against such attacks.

Reference

http://secunia.com/advisories/19402 http://secunia.com/advisories/19955 http://secunia.com/advisories/20157 http://secunia.com/advisories/20398 http://secunia.com/advisories/20671 http://secunia.com/advisories/20914 http://secunia.com/advisories/21136 http://secunia.com/advisories/21465 http://secunia.com/advisories/21983 http://secunia.com/advisories/22417 http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm http://www.debian.org/security/2006/dsa-1097 http://www.debian.org/security/2006/dsa-1103 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.1 http://www.mandriva.com/security/advisories?name=MDKSA-2006:086 http://www.novell.com/linux/security/advisories/2006-05-31.html http://www.redhat.com/support/errata/RHSA-2006-0437.html http://www.redhat.com/support/errata/RHSA-2006-0575.html http://www.securityfocus.com/archive/1/427622/100/0/threaded http://www.securityfocus.com/archive/1/427753/100/0/threaded http://www.securityfocus.com/archive/1/427893/100/0/threaded http://www.securityfocus.com/archive/1/428605/30/6210/threaded http://www.securityfocus.com/bid/17109 http://www.vupen.com/english/advisories/2006/1140 http://www.vupen.com/english/advisories/2006/2554 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A10317 https://usn.ubuntu.com/281-1/