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Red Hat: 2008:0561-01 Moderate: Ruby Heap Overflow Threat

red hat
Calendar Grey July 14, 2008
Dist Redhat Esm H88
Scheduled security patch for Python libraries on CentOS responding to various vulnerabilities related to buffer overflows.
Updated ruby packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5. This update has been rated as having moderate security impact by th...

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.
Multiple integer overflows leading to a heap overflow were discovered in the array- and string-handling code used by Ruby. An attacker could use these flaws to crash a Ruby application or, possibly, execute arbitrary code with the privileges of the Ruby application using untrusted inputs in array or string operations. (CVE-2008-2376, CVE-2008-2662, CVE-2008-2663, CVE-2008-2725, CVE-2008-2726)
It was discovered that Ruby used the alloca() memory allocation function in the format (%) method of the String class without properly restricting maximum string length. An attacker could use this flaw to crash a Ruby application or, possibly, execute arbitrary code with the privileges of the Ruby application using long, untrusted strings as format strings. (CVE-2008-2664)
Red Hat would like to thank Drew Yao of the Apple Product Security team for reporting these issues.
Users of Ruby should upgrade to these updated packages, which contain a backported patch to resolve these issues.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat heap overflow ruby SSRF

References

https://www.cve.org/CVERecord?id=CVE-2008-2662 https://www.cve.org/CVERecord?id=CVE-2008-2663 https://www.cve.org/CVERecord?id=CVE-2008-2664 https://www.cve.org/CVERecord?id=CVE-2008-2725 https://www.cve.org/CVERecord?id=CVE-2008-2726 https://www.cve.org/CVERecord?id=CVE-2008-2376 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: irb-1.8.1-7.el4_6.1.i386.rpm ruby-1.8.1-7.el4_6.1.i386.rpm ruby-debuginfo-1.8.1-7.el4_6.1.i386.rpm ruby-devel-1.8.1-7.el4_6.1.i386.rpm ruby-docs-1.8.1-7.el4_6.1.i386.rpm ruby-libs-1.8.1-7.el4_6.1.i386.rpm ruby-mode-1.8.1-7.el4_6.1.i386.rpm ruby-tcltk-1.8.1-7.el4_6.1.i386.rpm
ia64: irb-1.8.1-7.el4_6.1.ia64.rpm ruby-1.8.1-7.el4_6.1.ia64.rpm ruby-debuginfo-1.8.1-7.el4_6.1.i386.rpm ruby-debuginfo-1.8.1-7.el4_6.1.ia64.rpm ruby-devel-1.8.1-7.el4_6.1.ia64.rpm ruby-docs-1.8.1-7.el4_6.1.ia64.rpm ruby-libs-1.8.1-7.el4_6.1.i386.rpm ruby-libs-1.8.1-7.el4_6.1.ia64.rpm ruby-mode-1.8.1-7.el4_6.1.ia64.rpm ruby-tcltk-1.8.1-7.el4_6.1.ia64.rpm
ppc: irb-1.8.1-7.el4_6.1.ppc.rpm ruby-1.8.1-7.el4_6.1.ppc.rpm ruby-debuginfo-1.8.1-7.el4_6.1.ppc.rpm ruby-debuginfo-1.8.1-7.el4_6.1.ppc64.rpm ruby-devel-1.8.1-7.el4_6.1.ppc.rpm ruby-docs-1.8.1-7.el4_6.1.ppc.rpm ruby-libs-1.8.1-7.el4_6.1.ppc.rpm ruby-libs-1.8.1-7.el4_6.1.ppc64.rpm ruby-mode-1.8.1-7.el4_6.1.ppc.rpm ruby-tcltk-1.8.1-7.el4_6.1.ppc.rpm
s390: irb-1.8.1-7.el4_6.1.s390.rpm ruby-1.8.1-7.el4_6.1.s390.rpm ruby-debuginfo-1.8.1-7.el4_6.1.s390.rpm ruby-devel-1.8.1-7.el4_6.1.s390.rpm ruby-docs-1.8.1-7.el4_6.1.s390.rpm

Read the Full Advisory


Advisory ID: RHSA-2008:0561-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2008:0561.html
Issue date: 2008-07-14

Topic

Updated ruby packages that fix several security issues are now available for Red Hat Enterprise Linux 4 and 5.

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

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat heap overflow ruby SSRF

Relevant Releases Architectures

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

450821 - CVE-2008-2662 ruby: Integer overflows in rb_str_buf_append()

450825 - CVE-2008-2663 ruby: Integer overflows in rb_ary_store()

450834 - CVE-2008-2664 ruby: Unsafe use of alloca in rb_str_format()

451821 - CVE-2008-2725 ruby: integer overflow in rb_ary_splice/update/replace() - REALLOC_N

451828 - CVE-2008-2726 ruby: integer overflow in rb_ary_splice/update/replace() - beg + rlen

453589 - CVE-2008-2376 ruby: integer overflows in rb_ary_fill() / Array#fill

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