Ruby: Denial of Service

Security Team Contact Address

Updated May 10, 2006

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200605-11 / ruby
Release Date	May 10, 2006
Latest Revision	May 10, 2006: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
dev-lang/ruby	< 1.8.4-r1	>= 1.8.4-r1	All supported architectures

Related bugreports: #130657

Synopsis

Ruby WEBrick and XMLRPC servers are vulnerable to Denial of Service.

2. Impact Information

Background

Ruby is an interpreted scripting language for quick and easy object-oriented programming. It comes bundled with HTTP ("WEBrick") and XMLRPC server objects.

Description

Ruby uses blocking sockets for WEBrick and XMLRPC servers.

Impact

An attacker could send large amounts of data to an affected server to block the socket and thus deny other connections to the server.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Ruby users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.4-r1"

4. References