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CVE-2009-3287

7.5 · HIGH

lib/thin/connection.rb in Thin web server before 1.2.4 relies on the X-Forwarded-For header to determine the IP address of the client, which allows remote attackers to spoof the IP address and hide…

Published Sep 22, 2009macournoyerCWE-20EPSS 1.38%

Overview

CVE-2009-3287 is a high-severity vulnerability affecting macournoyer thin. It was published on September 22, 2009 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

lib/thin/connection.rb in Thin web server before 1.2.4 relies on the X-Forwarded-For header to determine the IP address of the client, which allows remote attackers to spoof the IP address and hide activities via a modified X-Forwarded-For header.

Remediation

Check the references section for vendor advisories and patches from macournoyer. Update thin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
macournoyerthin0Affected

References

GitHubgithub.com/macournoyer/thin/blob/master/CHANGELOGGitHubgithub.com/macournoyer/thin/commit/7bd027914c5ffd36bb408ef47dc749de3b6e063aRefwww.openwall.com/lists/oss-security/2009/09/12/1GitHubgithub.com/macournoyer/thin/blob/master/CHANGELOGGitHubgithub.com/macournoyer/thin/commit/7bd027914c5ffd36bb408ef47dc749de3b6e063aRefwww.openwall.com/lists/oss-security/2009/09/12/1

How CyberStrike helps

Frequently asked questions

What is CVE-2009-3287?

CVE-2009-3287 is a high-severity vulnerability affecting macournoyer thin. It was published on September 22, 2009 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2009-3287?

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-3287?

Check the references section for vendor advisories and patches from macournoyer. Update thin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-3287?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-3287 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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