[Full-Disclosure] [ GLSA 200502-32 ] UnAce: Buffer overflow and directory traversal vulnerabilities

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 02/28/05

  • Next message: Matteo Giannone: "Re: [Full-Disclosure] client - server" 
    To: gentoo-announce@gentoo.org
Date: Mon, 28 Feb 2005 17:37:58 +0100

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Gentoo Linux Security Advisory GLSA 200502-32
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                                http://security.gentoo.org/
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

      Severity: Normal
         Title: UnAce: Buffer overflow and directory traversal
                vulnerabilities
          Date: February 28, 2005
          Bugs: #81958
            ID: 200502-32

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Synopsis
    ========

    UnAce is vulnerable to several buffer overflow and directory traversal
    attacks.

    Background
    ==========

    UnAce is an utility to extract, view and test the contents of an ACE
    archive.

    Affected packages
    =================

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 app-arch/unace <= 1.2b *>= 1.2b-r1
         app-arch/unace >= 2.0 *>= 1.2b-r1

    Description
    ===========

    Ulf Harnhammar discovered that UnAce suffers from buffer overflows when
    testing, unpacking or listing specially crafted ACE archives
    (CAN-2005-0160). He also found out that UnAce is vulnerable to
    directory traversal attacks, if an archive contains "./.." sequences or
    absolute filenames (CAN-2005-0161).

    Impact
    ======

    An attacker could exploit the buffer overflows to execute malicious
    code or the directory traversals to overwrite arbitrary files.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All UnAce users should upgrade to the latest available 1.2 version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=app-arch/unace-1.2b-r1"

    References
    ==========

      [ 1 ] CAN-2005-0160
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0160
      [ 2 ] CAN-2005-0161
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0161

    Availability
    ============

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

      http://security.gentoo.org/glsa/glsa-200502-32.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 2005 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.

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

    _______________________________________________
    Full-Disclosure - We believe in it.
    Charter: http://lists.netsys.com/full-disclosure-charter.html

  • Next message: Matteo Giannone: "Re: [Full-Disclosure] client - server"