[OpenPKG-SA-2003.011] OpenPKG Security Advisory (lynx)

From: OpenPKG (openpkg@openpkg.org)
Date: 02/18/03

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    Date: Tue, 18 Feb 2003 17:32:03 +0100
    From: OpenPKG <openpkg@openpkg.org>
    To: bugtraq@securityfocus.com
    
    

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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-2003.011 18-Feb-2003
    ________________________________________________________________________

    Package: lynx
    Vulnerability: CRLF injection vulnerability
    OpenPKG Specific: no

    Affected Releases: Affected Packages: Corrected Packages:
    OpenPKG CURRENT <= lynx-2.8.4-20020206 >= lynx-2.8.4-20021216
    OpenPKG 1.2 <= N.A. >= lynx-2.8.4-1.2.0
    OpenPKG 1.1 <= lynx-2.8.4-1.1.0 >= lynx-2.8.4-1.1.1

    Affected Releases: Dependent Packages: none

    Description:
      Ulf Harnhammar posted information [0] reporting a "CRLF Injection"
      problem with Lynx [1] 2.8.4 and earlier. It is possible to inject
      false HTTP headers into an HTTP request that is provided on the
      command line, via a URL containing encoded carriage return, line feed,
      and other whitespace characters. This way, scripts that use Lynx for
      downloading files access the wrong site on a web server with multiple
      virtual hosts. The Common Vulnerabilities and Exposures (CVE) project
      assigned the id CAN-2002-1405 [2] to the problem.

      Please check whether you are affected by running "<prefix>/bin/rpm -q
      lynx". If you have the "lynx" 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], fetch it from the OpenPKG FTP service [6] or a mirror location,
      verify its integrity [7], build a corresponding binary RPM from it [3]
      and update your OpenPKG installation by applying the binary RPM [4].
      For the release OpenPKG 1.1, perform the following operations to
      permanently fix the security problem (for other releases adjust
      accordingly).

      $ ftp ftp.openpkg.org
      ftp> bin
      ftp> cd release/1.1/UPD
      ftp> get lynx-2.8.4-1.1.1.src.rpm
      ftp> bye
      $ <prefix>/bin/rpm -v --checksig lynx-2.8.4-1.1.1.src.rpm
      $ <prefix>/bin/rpm --rebuild lynx-2.8.4-1.1.1.src.rpm
      $ su -
      # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/lynx-2.8.4-1.1.1.*.rpm
    ________________________________________________________________________

    References:
      [0] bugtraq@securityfocus.com/msg08897.html">http://www.mail-archive.com/bugtraq@securityfocus.com/msg08897.html
      [1] http://lynx.isc.org/
      [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1405
      [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/lynx-2.8.4-1.1.1.src.rpm
      [6] ftp://ftp.openpkg.org/release/1.1/UPD/
      [7] 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 find under the official URL
    http://www.openpkg.org/openpkg.pgp or on http://keyserver.pgp.com/. To
    check the integrity of this advisory, verify its digital signature by
    using GnuPG (http://www.gnupg.org/). For instance, pipe this message to
    the command "gpg --verify --keyserver keyserver.pgp.com".
    ________________________________________________________________________

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