[ GLSA 200710-10 ] SKK Tools: Insecure temporary file creation

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  Severity: Normal
     Title: SKK Tools: Insecure temporary file creation
      Date: October 12, 2007
      Bugs: #193121
        ID: 200710-10

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Synopsis

SKK insecurely creates temporary files.

Background

SKK is a Japanese input method for Emacs.

Affected packages

     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  app-i18n/skktools      < 1.2-r1                         >= 1.2-r1

Description

skkdic-expr.c insecurely writes temporary files to a location in the form $TMPDIR/skkdic$PID.{pag,dir,db}, where $PID is the process ID.

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Impact

A local attacker could create symbolic links in the directory where the temporary files are written, pointing to a valid file somewhere on the filesystem that is writable by the user running the SKK software. When SKK writes the temporary file, the target valid file would then be overwritten with the contents of the SKK temporary file.

Workaround

There is no known workaround at this time.

Resolution

All SKK Tools users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-i18n/skktools-1.2-r1"

References

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  [ 1 ] CVE-2007-3916
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3916

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200710-10.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 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s).

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