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[ GLSA 200812-17 ] Ruby: Multiple vulnerabilities
From: Tobias Heinlein <keytoaster () gentoo org>
Date: Tue, 16 Dec 2008 21:37:02 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200812-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Ruby: Multiple vulnerabilities Date: December 16, 2008 Bugs: #225465, #236060 ID: 200812-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been discovered in Ruby that allow for attacks including arbitrary code execution and Denial of Service. Background ========== Ruby is an interpreted object-oriented programming language. The elaborate standard library includes an HTTP server ("WEBRick") and a class for XML parsing ("REXML"). Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-lang/ruby < 1.8.6_p287-r1 >= 1.8.6_p287-r1 Description =========== Multiple vulnerabilities have been discovered in the Ruby interpreter and its standard libraries. Drew Yao of Apple Product Security discovered the following flaws: * Arbitrary code execution or Denial of Service (memory corruption) in the rb_str_buf_append() function (CVE-2008-2662). * Arbitrary code execution or Denial of Service (memory corruption) in the rb_ary_stor() function (CVE-2008-2663). * Memory corruption via alloca in the rb_str_format() function (CVE-2008-2664). * Memory corruption ("REALLOC_N") in the rb_ary_splice() and rb_ary_replace() functions (CVE-2008-2725). * Memory corruption ("beg + rlen") in the rb_ary_splice() and rb_ary_replace() functions (CVE-2008-2726). Furthermore, several other vulnerabilities have been reported: * Tanaka Akira reported an issue with resolv.rb that enables attackers to spoof DNS responses (CVE-2008-1447). * Akira Tagoh of RedHat discovered a Denial of Service (crash) issue in the rb_ary_fill() function in array.c (CVE-2008-2376). * Several safe level bypass vulnerabilities were discovered and reported by Keita Yamaguchi (CVE-2008-3655). * Christian Neukirchen is credited for discovering a Denial of Service (CPU consumption) attack in the WEBRick HTTP server (CVE-2008-3656). * A fault in the dl module allowed the circumvention of taintness checks which could possibly lead to insecure code execution was reported by "sheepman" (CVE-2008-3657). * Tanaka Akira again found a DNS spoofing vulnerability caused by the resolv.rb implementation using poor randomness (CVE-2008-3905). * Luka Treiber and Mitja Kolsek (ACROS Security) disclosed a Denial of Service (CPU consumption) vulnerability in the REXML module when dealing with recursive entity expansion (CVE-2008-3790). Impact ====== These vulnerabilities allow remote attackers to execute arbitrary code, spoof DNS responses, bypass Ruby's built-in security and taintness checks, and cause a Denial of Service via crash or CPU exhaustion. 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_p287-r1" References ========== [ 1 ] CVE-2008-1447 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447 [ 2 ] CVE-2008-2376 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2376 [ 3 ] CVE-2008-2662 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2662 [ 4 ] CVE-2008-2663 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2663 [ 5 ] CVE-2008-2664 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2664 [ 6 ] CVE-2008-2725 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2725 [ 7 ] CVE-2008-2726 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2726 [ 8 ] CVE-2008-3655 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3655 [ 9 ] CVE-2008-3656 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3656 [ 10 ] CVE-2008-3657 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3657 [ 11 ] CVE-2008-3790 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3790 [ 12 ] CVE-2008-3905 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3905 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200812-17.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 security () gentoo org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2008 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
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- [ GLSA 200812-17 ] Ruby: Multiple vulnerabilities Tobias Heinlein (Dec 16)