SB2019112634 - Improper Neutralization of Special Elements in Output Used by a Downstream Component in Ruby

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component (CVE-ID: CVE-2011-3624)

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

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.

References

• https://access.redhat.com/security/cve/cve-2011-3624
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3624
• https://redmine.ruby-lang.org/issues/5418
• https://security-tracker.debian.org/tracker/CVE-2011-3624