[ GLSA 200412-26 ] ViewCVS: Information leak and XSS vulnerabilities

From: Thierry Carrez (koon_at_gentoo.org)
Date: 12/28/04

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To: gentoo-announce@lists.gentoo.org

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    Gentoo Linux Security Advisory GLSA 200412-26
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                                                http://security.gentoo.org/
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      Severity: Low
         Title: ViewCVS: Information leak and XSS vulnerabilities
          Date: December 28, 2004
          Bugs: #72461, #73772
            ID: 200412-26

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    Synopsis
    ========

    ViewCVS is vulnerable to an information leak and to cross-site
    scripting (XSS) issues.

    Background
    ==========

    ViewCVS is a browser interface for viewing CVS and Subversion version
    control repositories through a web browser.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 www-apps/viewcvs <= 0.9.2_p20041207 >= 0.9.2_p20041207-r1

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

    The tar export functions in ViewCVS bypass the 'hide_cvsroot' and
    'forbidden' settings and therefore expose information that should be
    kept secret (CAN-2004-0915). Furthermore, some error messages in
    ViewCVS do not filter user-provided information, making it vulnerable
    to a cross-site scripting attack (CAN-2004-1062).

    Impact
    ======

    By using the tar export functions, a remote attacker could access
    information that is configured as restricted. Through the use of a
    malicious request, an attacker could also inject and execute malicious
    script code, potentially compromising another user's browser.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All ViewCVS users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose
    ">=www-apps/viewcvs-0.9.2_p20041207-r1"

    References
    ==========

      [ 1 ] CAN-2004-0915
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0915
      [ 2 ] CAN-2004-1062
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1062

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

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

      http://security.gentoo.org/glsa/glsa-200412-26.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 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.

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

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