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120 lines
5.0 KiB
120 lines
5.0 KiB
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200812-17">
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<title>Ruby: Multiple vulnerabilities</title>
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<synopsis>
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Multiple vulnerabilities have been discovered in Ruby that allow for
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attacks including arbitrary code execution and Denial of Service.
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</synopsis>
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<product type="ebuild">ruby</product>
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<announced>2008-12-16</announced>
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<revised count="01">2008-12-16</revised>
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<bug>225465</bug>
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<bug>236060</bug>
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<access>remote</access>
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<affected>
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<package name="dev-lang/ruby" auto="yes" arch="*">
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<unaffected range="ge">1.8.6_p287-r1</unaffected>
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<vulnerable range="lt">1.8.6_p287-r1</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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Ruby is an interpreted object-oriented programming language. The
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elaborate standard library includes an HTTP server ("WEBRick") and a
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class for XML parsing ("REXML").
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</p>
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</background>
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<description>
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<p>
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Multiple vulnerabilities have been discovered in the Ruby interpreter
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and its standard libraries. Drew Yao of Apple Product Security
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discovered the following flaws:
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</p>
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<ul>
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<li>Arbitrary code execution
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or Denial of Service (memory corruption) in the rb_str_buf_append()
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function (CVE-2008-2662).</li>
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<li>Arbitrary code execution or Denial
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of Service (memory corruption) in the rb_ary_stor() function
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(CVE-2008-2663).</li>
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<li>Memory corruption via alloca in the
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rb_str_format() function (CVE-2008-2664).</li>
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<li>Memory corruption
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("REALLOC_N") in the rb_ary_splice() and rb_ary_replace() functions
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(CVE-2008-2725).</li>
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<li>Memory corruption ("beg + rlen") in the
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rb_ary_splice() and rb_ary_replace() functions (CVE-2008-2726).</li>
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</ul> <p>
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Furthermore, several other vulnerabilities have been reported:
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</p>
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<ul>
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<li>Tanaka Akira reported an issue with resolv.rb that enables
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attackers to spoof DNS responses (CVE-2008-1447).</li>
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<li>Akira Tagoh
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of RedHat discovered a Denial of Service (crash) issue in the
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rb_ary_fill() function in array.c (CVE-2008-2376).</li>
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<li>Several
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safe level bypass vulnerabilities were discovered and reported by Keita
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Yamaguchi (CVE-2008-3655).</li>
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<li>Christian Neukirchen is credited
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for discovering a Denial of Service (CPU consumption) attack in the
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WEBRick HTTP server (CVE-2008-3656).</li>
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<li>A fault in the dl module
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allowed the circumvention of taintness checks which could possibly lead
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to insecure code execution was reported by "sheepman"
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(CVE-2008-3657).</li>
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<li>Tanaka Akira again found a DNS spoofing
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vulnerability caused by the resolv.rb implementation using poor
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randomness (CVE-2008-3905).</li>
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<li>Luka Treiber and Mitja Kolsek
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(ACROS Security) disclosed a Denial of Service (CPU consumption)
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vulnerability in the REXML module when dealing with recursive entity
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expansion (CVE-2008-3790).</li>
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</ul>
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</description>
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<impact type="normal">
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<p>
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These vulnerabilities allow remote attackers to execute arbitrary code,
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spoof DNS responses, bypass Ruby's built-in security and taintness
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checks, and cause a Denial of Service via crash or CPU exhaustion.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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</p>
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</workaround>
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<resolution>
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<p>
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All Ruby users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.6_p287-r1"</code>
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</resolution>
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<references>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447">CVE-2008-1447</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2376">CVE-2008-2376</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2662">CVE-2008-2662</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2663">CVE-2008-2663</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2664">CVE-2008-2664</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2725">CVE-2008-2725</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2726">CVE-2008-2726</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3655">CVE-2008-3655</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3656">CVE-2008-3656</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3657">CVE-2008-3657</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3790">CVE-2008-3790</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3905">CVE-2008-3905</uri>
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</references>
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<metadata tag="requester" timestamp="2008-09-21T11:43:41Z">
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keytoaster
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</metadata>
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<metadata tag="submitter" timestamp="2008-11-10T18:52:14Z">
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hoffie
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</metadata>
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<metadata tag="bugReady" timestamp="2008-11-27T16:38:46Z">
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rbu
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</metadata>
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</glsa>
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