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.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-1097-1 New Kernel 2.4.27 packages fix several vulnerabilities
Debian DSA Debian DSA DSA-1103-1 New Linux kernel 2.6.8 packages fix several vulnerabilities
EUVD EUVD EUVD-2006-1246 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.
Ubuntu USN Ubuntu USN USN-281-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
History

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Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-07T17:03:28.742Z

Reserved: 2006-03-15T00:00:00

Link: CVE-2006-1242

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2006-03-15T17:06:00.000

Modified: 2025-04-03T01:03:51.193

Link: CVE-2006-1242

cve-icon Redhat

Severity : Low

Publid Date: 2006-03-14T00:00:00Z

Links: CVE-2006-1242 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses