High severity vulnerability that affects thin
Published: October 24, 2017
SECURITY IDENTIFIERS
- CVE: CVE-2009-3287 (NVD)
- GHSA: GHSA-j24p-r6wx-r79w
- Vendor Advisory: http://github.com/macournoyer/thin/blob/master/CHANGELOG
GEM
SEVERITY
CVSS v2.0: 7.5 (High)
PATCHED VERSIONS
>= 1.2.4
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.