[ GLSA 200502-04 ] Squid: Multiple vulnerabilities

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

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    To: gentoo-announce@gentoo.org
Date: Wed, 2 Feb 2005 21:06:09 +0100

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    Gentoo Linux Security Advisory GLSA 200502-04:02
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                                                http://security.gentoo.org/
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      Severity: Normal
         Title: Squid: Multiple vulnerabilities
          Date: February 02, 2005
       Updated: February 02, 2005
          Bugs: #79495, #78776, #80201, #80341
            ID: 200502-04:02

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    Synopsis
    ========

    Squid contains vulnerabilities in the code handling WCCP, HTTP and LDAP
    which could lead to Denial of Service, access control bypass, web cache
    and log poisoning.

    Background
    ==========

    Squid is a full-featured Web proxy cache designed to run on Unix
    systems. It supports proxying and caching of HTTP, FTP, and other
    protocols, as well as SSL support, cache hierarchies, transparent
    caching, access control lists and many other features.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 www-proxy/squid < 2.5.7-r5 >= 2.5.7-r5

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

    Squid contains several vulnerabilities:

    * Buffer overflow when handling WCCP recvfrom() (CAN-2005-0211).

    * Loose checking of HTTP headers (CAN-2005-0173 and CAN-2005-0174).

    * Incorrect handling of LDAP login names with spaces (CAN-2005-0175).

    Impact
    ======

    An attacker could exploit:

    * the WCCP buffer overflow to cause Denial of Service.

    * the HTTP header parsing vulnerabilities to inject arbitrary
      response data, potentially leading to content spoofing, web cache
      poisoning and other cross-site scripting or HTTP response splitting
      attacks.

    * the LDAP issue to login with several variations of the same login
      name, leading to log poisoning.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All Squid users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=www-proxy/squid-2.5.7-r5"

    References
    ==========

      [ 1 ] CAN-2005-0173
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0173
      [ 2 ] CAN-2005-0174
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0174
      [ 3 ] CAN-2005-0175
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0175
      [ 4 ] CAN-2005-0211
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0211

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

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

      http://security.gentoo.org/glsa/glsa-200502-04.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

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