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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200409-08">
<title>Ruby: CGI::Session creates files insecurely</title>
<synopsis>
When used for CGI scripting, Ruby creates session files in /tmp with the
permissions of the default umask. Depending on that umask, local users may
be able to read sensitive data stored in session files.
</synopsis>
<product type="ebuild">dev-lang/ruby</product>
<announced>September 03, 2004</announced>
<revised>September 03, 2004: 01</revised>
<bug>60525</bug>
<access>local</access>
<affected>
<package name="dev-lang/ruby" auto="yes" arch="*">
<unaffected range="rge">1.6.8-r11</unaffected>
<unaffected range="rge">1.8.0-r7</unaffected>
<unaffected range="ge">1.8.2_pre2</unaffected>
<vulnerable range="lt">1.8.2_pre2</vulnerable>
</package>
</affected>
<background>
<p>
Ruby is an Object Oriented, interpreted scripting language used for many
system scripting tasks. It can also be used for CGI web applications.
</p>
</background>
<description>
<p>
The CGI::Session::FileStore implementation (and presumably
CGI::Session::PStore), which allow data associated with a particular
Session instance to be written to a file, writes to a file in /tmp with no
regard for secure permissions. As a result, the file is left with whatever
the default umask permissions are, which commonly would allow other local
users to read the data from that session file.
</p>
</description>
<impact type="normal">
<p>
Depending on the default umask, any data stored using these methods could
be read by other users on the system.
</p>
</impact>
<workaround>
<p>
By changing the default umask on the system to not permit read access to
other users (e.g. 0700), one can prevent these files from being readable by
other users.
</p>
</workaround>
<resolution>
<p>
All Ruby users should upgrade to the latest version:
</p>
<code>
# emerge sync
# emerge -pv ">=dev-lang/ruby-your_version"
# emerge ">=dev-lang/ruby-your_version"</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0755">CAN-2004-0755</uri>
</references>
<metadata tag="requester" timestamp="Sat, 28 Aug 2004 23:01:05 +0000">
jaervosz
</metadata>
<metadata tag="submitter" timestamp="Wed, 1 Sep 2004 04:27:07 +0000">
dmargoli
</metadata>
</glsa>
|
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