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CVE-2006-1242

UnknownEPSS 3.43%

Last modified

CVE-2006-1242 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.43% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
3.43%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel2.4.0—
LinuxLinux Kernel2.4.1—
LinuxLinux Kernel2.4.2—
LinuxLinux Kernel2.4.3—
LinuxLinux Kernel2.4.4—
LinuxLinux Kernel2.4.5—
LinuxLinux Kernel2.4.6—
LinuxLinux Kernel2.4.7—
LinuxLinux Kernel2.4.8—
LinuxLinux Kernel2.4.9—
LinuxLinux Kernel2.4.10—
LinuxLinux Kernel2.4.11—
LinuxLinux Kernel2.4.12—
LinuxLinux Kernel2.4.13—
LinuxLinux Kernel2.4.14—
LinuxLinux Kernel2.4.15—
LinuxLinux Kernel2.4.16—
LinuxLinux Kernel2.4.17—
LinuxLinux Kernel2.4.18—
LinuxLinux Kernel2.4.19—
LinuxLinux Kernel2.4.20—
LinuxLinux Kernel2.4.21—
LinuxLinux Kernel2.4.22—
LinuxLinux Kernel2.4.23—
LinuxLinux Kernel2.4.23_ow2—
LinuxLinux Kernel2.4.24—
LinuxLinux Kernel2.4.24_ow1—
LinuxLinux Kernel2.4.25—
LinuxLinux Kernel2.4.26—
LinuxLinux Kernel2.4.27—
LinuxLinux Kernel2.4.28—
LinuxLinux Kernel2.4.29—
LinuxLinux Kernel2.4.30—
LinuxLinux Kernel2.4.31—
LinuxLinux Kernel2.4.32—
LinuxLinux Kernel2.4.33Pre1
LinuxLinux Kernel2.6.0—
LinuxLinux Kernel2.6.1—
LinuxLinux Kernel2.6.2—
LinuxLinux Kernel2.6.3—
LinuxLinux Kernel2.6.4—
LinuxLinux Kernel2.6.5—
LinuxLinux Kernel2.6.6—
LinuxLinux Kernel2.6.7—
LinuxLinux Kernel2.6.8—
LinuxLinux Kernel2.6.92.6.20
LinuxLinux Kernel2.6.10—
LinuxLinux Kernel2.6.11—
LinuxLinux Kernel2.6.11.5—
LinuxLinux Kernel2.6.11.6—

Showing 50 of 79 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2006-1242?
Severity scoring for CVE-2006-1242 is pending analysis. The EPSS model estimates a 3.43% probability of exploitation in the next 30 days.
How do I fix CVE-2006-1242?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST