Explain CVE-2006-1242
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.
Affected Products: n/a
References: [{'name': 'RHSA-2006:0437', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2006-0437.html'}, {'name': 'ADV-2006-2554', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2006/2554'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.1'}, {'name': '20060315 Re: Linux zero IP ID vulnerability?', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/427753/100/0/threaded'}, {'name': 'USN-281-1', 'tags': ['vendor-advisory', 'x_refsource_UBUNTU'], 'url': 'https://usn.ubuntu.com/281-1/'}, {'name': '21136', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/21136'}, {'name': '19402', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/19402'}, {'name': '20060316 Re: Linux zero IP ID vulnerability?', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/427893/100/0/threaded'}, {'name': '21983', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/21983'}, {'name': '17109', 'tags': ['vdb-entry', 'x_refsource_BID'], 'url': 'http://www.securityfocus.com/bid/17109'}, {'name': 'DSA-1097', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2006/dsa-1097'}, {'name': 'RHSA-2006:0575', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2006-0575.html'}, {'name': '20060314 Linux zero IP ID vulnerability?', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/427622/100/0/threaded'}, {'name': 'SUSE-SA:2006:028', 'tags': ['vendor-advisory', 'x_refsource_SUSE'], 'url': 'http://www.novell.com/linux/security/advisories/2006-05-31.html'}, {'name': '19955', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/19955'}, {'name': '20060323 Re: Linux zero IP ID vulnerability?', 'tags': ['mailing-list', 'x_refsource_BUGTRAQ'], 'url': 'http://www.securityfocus.com/archive/1/428605/30/6210/threaded'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm'}, {'name': 'DSA-1103', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2006/dsa-1103'}, {'name': '21465', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/21465'}, {'name': 'oval:org.mitre.oval:def:10317', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10317'}, {'name': 'ADV-2006-1140', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2006/1140'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm'}, {'name': '20398', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/20398'}, {'name': '22417', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/22417'}, {'name': 'MDKSA-2006:086', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDKSA-2006:086'}, {'name': '20671', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/20671'}, {'name': '20157', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/20157'}, {'name': '20914', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/20914'}]
CVE State: PUBLISHED