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Ruby: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

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


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

2.  Impact Information


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


Ruby uses blocking sockets for WEBrick and XMLRPC servers.


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


There is no known workaround at this time.


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


Page updated May 10, 2006

Summary: This is a Gentoo Linux Security Advisory

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