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Red Hat Enterprise Linux 3: RHSA-2008:0896-01 Moderate: Ruby Security Patch

red hat
Calendar Grey October 21, 2008
Dist Redhat Esm H88
Enhanced Ruby distributions resolve notable security issues in Red Hat Enterprise. Comprehensive critical upgrade guidelines included.
Updated ruby packages that fix several security issues are now available for Red Hat Enterprise Linux 3

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at

Summary

Ruby is an interpreted scripting language for quick and easy object-oriented programming.
The Ruby DNS resolver library, resolv.rb, used predictable transaction IDs and a fixed source port when sending DNS requests. A remote attacker could use this flaw to spoof a malicious reply to a DNS query. (CVE-2008-3905)
A number of flaws were found in the safe-level restrictions in Ruby. It was possible for an attacker to create a carefully crafted malicious script that can allow the bypass of certain safe-level restrictions. (CVE-2008-3655)
A denial of service flaw was found in Ruby's regular expression engine. If a Ruby script tried to process a large amount of data via a regular expression, it could cause Ruby to enter an infinite-loop and crash. (CVE-2008-3443)
Users of ruby should upgrade to these updated packages, which contain backported patches to resolve these issues.

Topics%20covered

Topics Covered

security advisory moderate denial of service security update red hat ruby package fix

References

https://www.cve.org/CVERecord?id=CVE-2008-3443 https://www.cve.org/CVERecord?id=CVE-2008-3655 https://www.cve.org/CVERecord?id=CVE-2008-3905 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux AS version 3:
Source:
i386: irb-1.6.8-13.el3.i386.rpm ruby-1.6.8-13.el3.i386.rpm ruby-debuginfo-1.6.8-13.el3.i386.rpm ruby-devel-1.6.8-13.el3.i386.rpm ruby-docs-1.6.8-13.el3.i386.rpm ruby-libs-1.6.8-13.el3.i386.rpm ruby-mode-1.6.8-13.el3.i386.rpm ruby-tcltk-1.6.8-13.el3.i386.rpm
ia64: irb-1.6.8-13.el3.ia64.rpm ruby-1.6.8-13.el3.ia64.rpm ruby-debuginfo-1.6.8-13.el3.i386.rpm ruby-debuginfo-1.6.8-13.el3.ia64.rpm ruby-devel-1.6.8-13.el3.ia64.rpm ruby-docs-1.6.8-13.el3.ia64.rpm ruby-libs-1.6.8-13.el3.i386.rpm ruby-libs-1.6.8-13.el3.ia64.rpm ruby-mode-1.6.8-13.el3.ia64.rpm ruby-tcltk-1.6.8-13.el3.ia64.rpm
ppc: irb-1.6.8-13.el3.ppc.rpm ruby-1.6.8-13.el3.ppc.rpm ruby-debuginfo-1.6.8-13.el3.ppc.rpm ruby-debuginfo-1.6.8-13.el3.ppc64.rpm ruby-devel-1.6.8-13.el3.ppc.rpm ruby-docs-1.6.8-13.el3.ppc.rpm ruby-libs-1.6.8-13.el3.ppc.rpm ruby-libs-1.6.8-13.el3.ppc64.rpm ruby-mode-1.6.8-13.el3.ppc.rpm ruby-tcltk-1.6.8-13.el3.ppc.rpm
s390: irb-1.6.8-13.el3.s390.rpm ruby-1.6.8-13.el3.s390.rpm ruby-debuginfo-1.6.8-13.el3.s390.rpm ruby-devel-1.6.8-13.el3.s390.rpm ruby-docs-1.6.8-13.el3.s390.rpm ruby-libs-1.6.8-13.el3.s390.rpm ruby-mode-1.6.8-13.el3.s390.rpm ruby-tcltk-1.6.8-13.el3.s390.rpm
s390x:

Read the Full Advisory


Advisory ID: RHSA-2008:0896-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2008:0896.html
Issue date: 2008-10-21

Topic

Updated ruby packages that fix several security issues are now available for Red Hat Enterprise Linux 3.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

Topics%20covered

Topics Covered

security advisory moderate denial of service security update red hat ruby package fix

Relevant Releases Architectures

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Desktop version 3 - i386, x86_64

Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

Bugs Fixed

458948 - CVE-2008-3655 ruby: multiple insufficient safe mode restrictions

459266 - CVE-2008-3443 ruby: Memory allocation failure in Ruby regex engine (remotely exploitable DoS)

461495 - CVE-2008-3905 ruby: use of predictable source port and transaction id in DNS requests done by resolv.rb module

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