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Gentoo Linux Security Advisory                           GLSA 200411-16
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: zip: Path name buffer overflow
      Date: November 09, 2004
      Bugs: #70227
        ID: 200411-16

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Synopsis
=======
zip contains a buffer overflow when creating a ZIP archive of files
with very long path names. This could lead to the execution of
arbitrary code.

Background
=========
zip is a compression and file packaging utility.

Affected packages
================
    -------------------------------------------------------------------
     Package       /  Vulnerable  /                         Unaffected
    -------------------------------------------------------------------
  1  app-arch/zip      <= 2.3-r3                             >= 2.3-r4

Description
==========
zip does not check the resulting path length when doing recursive
folder compression.

Impact
=====
An attacker could exploit this by enticing another user or web
application to create an archive including a specially-crafted path
name, potentially resulting in the execution of arbitrary code with the
permissions of the user running zip.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All zip users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-arch/zip-2.3-r4"

References
=========
  [ 1 ] HexView zip Advisory
        
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  https://security.gentoo.org/glsa/200411-16

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
https://bugs.gentoo.org/.

License
======
Copyright 2004 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.

https://creativecommons.org/licenses/by-sa/2.0/