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Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200409-08] Ruby: CGI::Session creates files insecurely

Vulnerability Assessment Details

[GLSA-200409-08] Ruby: CGI::Session creates files insecurely

Vulnerability Assessment Summary
Ruby: CGI::Session creates files insecurely

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200409-08
(Ruby: CGI::Session creates files insecurely)

The CGI::Session::FileStore implementation (and presumably
CGI::Session::PStore), which permit 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 permit other local
users to read the data from that session file.

Impact

Depending on the default umask, any data stored using these methods could
be read by other users on the system.

Workaround

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.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-0755

Solution:
All Ruby users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=dev-lang/ruby-your_version"
# emerge ">=dev-lang/ruby-your_version"

Network Security Threat Level: Medium

Networks Security ID:

Vulnerability Assessment Copyright: (C) 2005 Michel Arboi

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