CVE-2006-1242

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.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 3.04% Top 15%

Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory novell.com Vendor Advisory debian.org Vendor Advisory mandriva.com Vendor Advisory secunia.com

Affected: n/a n/a

References

Link	Tags
http://www.redhat.com/support/errata/RHSA-2006-0437.html	vendor advisory
http://www.vupen.com/english/advisories/2006/2554	vdb entry
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.1
http://www.securityfocus.com/archive/1/427753/100/0/threaded	mailing list
https://usn.ubuntu.com/281-1/	vendor advisory
http://secunia.com/advisories/21136	third party advisory
http://secunia.com/advisories/19402	third party advisory patch vendor advisory
http://www.securityfocus.com/archive/1/427893/100/0/threaded	mailing list
http://secunia.com/advisories/21983	third party advisory
http://www.securityfocus.com/bid/17109	vdb entry
http://www.debian.org/security/2006/dsa-1097	vendor advisory
http://www.redhat.com/support/errata/RHSA-2006-0575.html	vendor advisory
http://www.securityfocus.com/archive/1/427622/100/0/threaded	mailing list
http://www.novell.com/linux/security/advisories/2006-05-31.html	vendor advisory
http://secunia.com/advisories/19955	third party advisory
http://www.securityfocus.com/archive/1/428605/30/6210/threaded	mailing list
http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
http://www.debian.org/security/2006/dsa-1103	vendor advisory
http://secunia.com/advisories/21465	third party advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10317	vdb entry signature
http://www.vupen.com/english/advisories/2006/1140	vdb entry
http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
http://secunia.com/advisories/20398	third party advisory
http://secunia.com/advisories/22417	third party advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2006:086	vendor advisory
http://secunia.com/advisories/20671	third party advisory
http://secunia.com/advisories/20157	third party advisory
http://secunia.com/advisories/20914	third party advisory

Frequently Asked Questions

What is the severity of CVE-2006-1242?: CVE-2006-1242 has been scored as a medium severity vulnerability.
How to fix CVE-2006-1242?: To fix CVE-2006-1242, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2006-1242 being actively exploited in the wild?: It is possible that CVE-2006-1242 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.