drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Ruby
Name: |
Mehrere Probleme in Ruby |
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ID: |
200812-17 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 16. Dezember 2008, 21:45 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2376
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2662
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2663
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2664
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2725
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2726
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3655
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3656
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3657
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3790
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3905 |
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Applikationen: |
Ruby |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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
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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 >=3D 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 ">=3Ddev-lang/ruby-1.8.6_p287-r1"
References ==========
[ 1 ] CVE-2008-1447 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-1447 [ 2 ] CVE-2008-2376 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2376 [ 3 ] CVE-2008-2662 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2662 [ 4 ] CVE-2008-2663 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2663 [ 5 ] CVE-2008-2664 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2664 [ 6 ] CVE-2008-2725 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2725 [ 7 ] CVE-2008-2726 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2726 [ 8 ] CVE-2008-3655 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-3655 [ 9 ] CVE-2008-3656 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-3656 [ 10 ] CVE-2008-3657 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-3657 [ 11 ] CVE-2008-3790 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-3790 [ 12 ] CVE-2008-3905 http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-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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