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OpenPKG Security Advisory                            The OpenPKG Project
http://www.openpkg.org/security.html              http://www.openpkg.org
openpkg-security@openpkg.org                         openpkg@openpkg.org
OpenPKG-SA-2003.033                                          10-Jul-2003
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Package:             infozip
Vulnerability:       overwrite arbitrary files
OpenPKG Specific:    no

Affected Releases:   Affected Packages:           Corrected Packages:
OpenPKG CURRENT      <= infozip-20030306-20030708 >= infozip-20030710-20030710
OpenPKG 1.2          <= infozip-1.2.0-1.2.0       >= infozip-1.2.0-1.2.1
OpenPKG 1.1          <= infozip-1.1.0-1.1.0       >= infozip-1.1.0-1.1.1

Dependent Packages:  none

Description:
  A directory traversal vulnerability in UnZip 5.50 allows attackers
  to overwrite arbitrary files via invalid characters between two "."
  (dot) characters, which are filtered and result in a ".." sequence.
  The corrected packages include a patch taken from RedHat [1] ensuring
  that non-printable characters do not make it possible for a malicious
  .zip file to write to parent directories unless the "-:" command line
  parameter is specified. The Common Vulnerabilities and Exposures (CVE)
  project assigned the id CAN-2003-0282 [2] to the problem.

  Please check whether you are affected by running "<prefix>/bin/rpm -q
  infozip". If you have the "infozip" package installed and its version
  is affected (see above), we recommend that you immediately upgrade it
  (see Solution) [3][4].

Solution:
  Select the updated source RPM appropriate for your OpenPKG release
  [5][6], fetch it from the OpenPKG FTP service [7][8] or a mirror
  location, verify its integrity [9], build a corresponding binary RPM
  from it [3] and update your OpenPKG installation by applying the
  binary RPM [4]. For the current release OpenPKG 1.2, perform the
  following operations to permanently fix the security problem (for
  other releases adjust accordingly).

  $ ftp ftp.openpkg.org
  ftp> bin
  ftp> cd release/1.2/UPD
  ftp> get infozip-1.2.0-1.2.1.src.rpm
  ftp> bye
  $ <prefix>/bin/rpm -v --checksig infozip-1.2.0-1.2.1.src.rpm
  $ <prefix>/bin/rpm --rebuild infozip-1.2.0-1.2.1.src.rpm
  $ su -
  # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/infozip-1.2.0-1.2.1.*.rpm
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References:
  [1] http://rhn.redhat.com/errata/RHSA-2003-199.html
  [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0282
  [3] http://www.openpkg.org/tutorial.html#regular-source
  [4] http://www.openpkg.org/tutorial.html#regular-binary
  [5] ftp://ftp.openpkg.org/release/1.1/UPD/infozip-1.1.0-1.1.1.src.rpm
  [6] ftp://ftp.openpkg.org/release/1.2/UPD/infozip-1.2.0-1.2.1.src.rpm
  [7] ftp://ftp.openpkg.org/release/1.1/UPD/
  [8] ftp://ftp.openpkg.org/release/1.2/UPD/
  [9] http://www.openpkg.org/security.html#signature
________________________________________________________________________

For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg@openpkg.org>" (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
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