Gentoo Linux Security Advisory GLSA 200906-02

                                        http://security.gentoo.org/

Severity: Normal
Title: Ruby: Denial of Service
Date: June 28, 2009
Bugs: #273213
ID: 200906-02

Synopsis

A flaw in the Ruby standard library might allow remote attackers to
cause a Denial of Service attack.

Background

Ruby is an interpreted object-oriented programming language. The
elaborate standard library includes the "BigDecimal" class.

Affected packages

-------------------------------------------------------------------
 Package        /   Vulnerable   /                      Unaffected
-------------------------------------------------------------------

1 dev-lang/ruby < 1.8.6_p369 >= 1.8.6_p369

Description

Tadayoshi Funaba reported that BigDecimal in
ext/bigdecimal/bigdecimal.c does not properly handle string arguments
containing overly long numbers.

Impact

A remote attacker could exploit this issue to remotely cause a Denial
of Service attack.

Workaround

There is no known workaround at this time.

Resolution

All Ruby users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.6_p369"

References

[ 1 ] CVE-2009-1904
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1904

Availability

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200906-02.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.

License

Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5