CVE-2009-3287 High severity vulnerability that affects thin

High 7.5 Published Updated

Attackers can spoof client IP addresses by manipulating the X-Forwarded-For header, bypassing IP-based access controls or logging mechanisms.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2009-3287?

CVE-2009-3287 is a high-severity vulnerability in n/a, published on 22 Sep 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-20

Which versions are affected by CVE-2009-3287?

2 open source packages ship an affected version, including thin. It affects 1 product.

PackageAffectedFixed in
thin RubyGemsAll versions1.2.4
thin RubyGemsAll versions1.2.4

Products include Macournoyer Thin.

How do I fix CVE-2009-3287?

Upgrade thin to 1.2.4 or later.

Is CVE-2009-3287 being exploited?

There is no known exploitation of CVE-2009-3287 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2009-3287, GHSA-j24p-r6wx-r79w.

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