SB2019112634 - Improper Neutralization of Special Elements in Output Used by a Downstream Component in Ruby
Published: November 26, 2019 Updated: August 8, 2020
Security Bulletin ID
SB2019112634
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Neutralization of Special Elements in Output Used by a Downstream Component (CVE-ID: CVE-2011-3624)
The vulnerability allows a remote non-authenticated attacker to manipulate data.
Various methods in WEBrick::HTTPRequest in Ruby 1.9.2 and 1.8.7 and earlier do not validate the X-Forwarded-For, X-Forwarded-Host and X-Forwarded-Server headers in requests, which might allow remote attackers to inject arbitrary text into log files or bypass intended address parsing via a crafted header.
Remediation
Install update from vendor's website.